Updated 10 h ago

Vulnerability database

Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.

1,764exploited flaws on CISA’s list

35added in the last 30 days

456new WordPress flaws this week

390,714entries in the database

205 results · page 2 of 5

Jun 15, 2026Impact: multer versions 1.0.0 through 2.1.1 and 3.0.0-alpha.1 are vulnerable to a Denial of Service via deeply nested field names in multipart form data.CVE-2026-5079 · Other software · multer · reported by ce714d77-add3-4f53-aff5-83d477b104bbHigh 7.5
Impact: multer versions 1.0.0 through 2.1.1 and 3.0.0-alpha.1 are vulnerable to a Denial of Service via deeply nested field names in multipart form data. The append-field dependency parses bracket notation in field names with no limit on nesting depth, allowing an attacker to force allocation of deeply nested object structures that consume CPU and memory. A single HTTP request with a crafted multipart body is sufficient to exploit this. Patches: Users should upgrade to multer 2.2.0 (2.x line) or 3.0.0-alpha.2 (3.x prerelease) and configure the new limits.fieldNestingDepth option to the minimum depth their application requires. Workarounds: Set limits.fields to a reasonable value to reduce the number of fields an attacker can send per request. This does not fully mitigate the issue but limits the impact.
Product
multer
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record cna.openjsf.org github.com
Jun 12, 2026form-data is a library for creating readable multipart/form-data streams.CVE-2026-12143 · Other software · form-data · reported by 7ffcee3d-2c14-4c3e-b844-86c6a321a158High 8.7
form-data is a library for creating readable multipart/form-data streams. In versions through 4.0.5, the `field` argument to `FormData#append` and the `filename` option are concatenated verbatim into the `Content-Disposition` header without escaping carriage return (CR), line feed (LF), or double-quote (") characters. An application that passes attacker-controlled data as a field name or filename (for example, an API gateway that turns JSON object keys into multipart field names) allows the attacker to terminate the header line and inject additional headers, or to smuggle entire additional multipart parts, into the request the application forwards to a backend. This can let the attacker add or override form fields (e.g. set `is_admin=true`) seen by the downstream parser. This is an instance of CWE-93 (CRLF injection). The fix escapes CR, LF, and `"` as `%0D`, `%0A`, and `%22` in field names and filenames, matching the serialization browsers use per the WHATWG HTML multipart/form-data encoding algorithm. Exploitation requires the consuming application to use untrusted input as a field name or filename; applications that use only fixed/trusted field names are not affected. Fixed in 2
Product
form-data
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record cwe.mitre.org github.com
Jun 9, 2026Spring MVC and WebFlux applications are vulnerable to Multipart request smuggling attacks.CVE-2026-41853 · Other software · Spring · reported by security@vmware.comMedium 5.3
Spring MVC and WebFlux applications are vulnerable to Multipart request smuggling attacks. Affected versions: Spring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.
Product
Spring Framework
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record spring.io
Jun 9, 2026Spring WebFlux applications are vulnerable to Denial of Service (DoS) attacks when processing multipart requests.CVE-2026-41840 · Other software · Spring · reported by security@vmware.comMedium 5.9
Spring WebFlux applications are vulnerable to Denial of Service (DoS) attacks when processing multipart requests. Affected versions: Spring Framework 7.0.0 through 7.0.7, 6.2.0 through 6.2.18, 6.1.0 through 6.1.27, 5.3.0 through 5.3.48.
Product
Spring Framework
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record spring.io
Jun 8, 2026Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in wojtekmach Req allows multipart parameter smuggling via attacker-influenced part mCVE-2026-49756 · Other software · wojtekmach · reported by 6b3ad84c-e1a6-4bf7-a703-f496b71e49dbLow 2.1
Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in wojtekmach Req allows multipart parameter smuggling via attacker-influenced part metadata. Req.Utils.encode_form_part/2 in lib/req/utils.ex builds the per-part headers by interpolating the caller-supplied name, filename, and content_type values directly into the content-disposition and content-type lines with no escaping or CRLF stripping. A value containing ", \r, or \n closes the surrounding quoted value and starts a new header line; an additional \r\n--<boundary> terminates the current part and prepends a smuggled part of the attacker's choosing. This is reachable through every supported way of supplying a part. It is particularly easy when value is a %File.Stream{}, because filename then defaults to Path.basename(stream.path) and POSIX filenames may legitimately contain \r and \n. Any application that forwards user-controlled filenames (or field names / MIME types) through Req.post/2 with form_multipart: lets an attacker inject arbitrary headers into the outgoing multipart body or smuggle additional fields and parts into the request the victim service sends downstream. This issue affects req: from
Product
req
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record cna.erlef.org github.com
Jun 2, 2026Improper Encoding or Escaping of Output vulnerability in elixir-tesla tesla allows multipart part header injection via unescaped Content-Disposition parameter vCVE-2026-48598 · Other software · elixir-tesla · reported by 6b3ad84c-e1a6-4bf7-a703-f496b71e49dbLow 2.1
Improper Encoding or Escaping of Output vulnerability in elixir-tesla tesla allows multipart part header injection via unescaped Content-Disposition parameter values. Tesla.Multipart.part_headers_for_disposition/1 interpolates each disposition parameter as #{k}="#{v}" with no validation of CR (\r), LF (\n), or double-quote characters. The values come verbatim from the caller via Tesla.Multipart.add_field/4 (the name parameter), Tesla.Multipart.add_file/3, and Tesla.Multipart.add_file_content/4 (both the filename parameter and other disposition opts). A " in the value closes the quoted parameter early; a \r\n ends the Content-Disposition header line and starts a new part header (such as a forged Content-Type), or, after a second \r\n, ends the entire part header block and prepends bytes to the part body. The default-filename path in add_file/3 derives the filename via Path.basename/1, which does not strip CR or LF, so any application forwarding a partially-attacker-controlled file path inherits the same issue. This issue affects tesla: from 0.8.0 before 1.18.3.
Product
tesla
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record cna.erlef.org github.com
May 25, 2026A vulnerability in MLflow versions <=3.10.1.dev0 allows unauthorized access to multipart upload (MPU) endpoints when the `--serve-artifacts` mode is enabled.CVE-2026-2651 · Other software · mlflow · reported by security@huntr.devCritical 9
A vulnerability in MLflow versions <=3.10.1.dev0 allows unauthorized access to multipart upload (MPU) endpoints when the `--serve-artifacts` mode is enabled. The authorization logic does not enforce resource-level permission checks for `/mlflow-artifacts/mpu/*` endpoints, enabling attackers to overwrite artifacts belonging to other users. This can lead to unauthorized cross-user writes, model supply chain poisoning, and arbitrary code execution when compromised models are loaded. The issue is resolved in version 3.10.0.
Product
mlflow/mlflow
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com huntr.com
May 14, 2026Allocation of Resources Without Limits or Throttling vulnerability in plug_project plug allows denial of service via unbounded buffer accumulation in multipart CVE-2026-8468 · Other software · elixir-plug · reported by 6b3ad84c-e1a6-4bf7-a703-f496b71e49dbHigh 8.2
Allocation of Resources Without Limits or Throttling vulnerability in plug_project plug allows denial of service via unbounded buffer accumulation in multipart header parsing. 'Elixir.Plug.Conn':read_part_headers/2 in lib/plug/conn.ex does not obey its :length parameter. There is no upper bound on the size of the accumulated buffer. By contrast, the sibling function read_part_body has an explicit byte_size(acc) > length guard that stops accumulation once a limit is reached. No such guard exists in read_part_headers. An unauthenticated remote attacker can exhaust server memory by sending a crafted multipart/form-data request, causing a denial of service. This issue affects plug from 1.4.0 before 1.15.4, 1.16.3, 1.17.1, 1.18.2, and 1.19.2.
Product
plug
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record cna.erlef.org cna.erlef.org
May 13, 2026Python-Multipart is a streaming multipart parser for Python.CVE-2026-42561 · Other software · Kludex · reported by GitHubHigh 7.5
Python-Multipart is a streaming multipart parser for Python. Prior to 0.0.27, python-multipart has a denial of service vulnerability in multipart part header parsing. When parsing multipart/form-data, MultipartParser previously had no limit on the number of part headers or the size of an individual part header. An attacker could send a request with either many repeated headers without terminating the header block or a single very large header value, causing excessive CPU work before request rejection or completion. This vulnerability is fixed in 0.0.27.
Product
python-multipart
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com access.redhat.com
May 13, 2026Allocation of Resources Without Limits or Throttling vulnerability in ninenines cowboy allows denial of service via unbounded buffer accumulation in multipart hCVE-2026-8466 · Other software · ninenines · reported by 6b3ad84c-e1a6-4bf7-a703-f496b71e49dbHigh 8.2
Allocation of Resources Without Limits or Throttling vulnerability in ninenines cowboy allows denial of service via unbounded buffer accumulation in multipart header parsing. cowboy_req:read_part/3 in src/cowboy_req.erl accumulates incoming request bytes into a Buffer binary with no upper-bound check. When cow_multipart:parse_headers/2 returns more or {more, Buffer2}, the function reads up to Length bytes (default 64 KB) from the request body and recurses with the enlarged buffer. There is no equivalent of the byte_size(Acc) > Length guard present in the sibling function read_part_body/4. An unauthenticated attacker can send a multipart/form-data request whose body never yields a complete header section — for example, a body that never contains the advertised boundary delimiter, or one whose header lines never contain \r\n\r\n — and force the server process to accumulate memory linearly with the bytes the protocol layer is willing to deliver. A handful of concurrent such uploads is sufficient to exhaust BEAM memory. This issue affects cowboy from 2.0.0 before 2.15.0.
Product
cowboy
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record cna.erlef.org github.com
May 12, 2026multiparty@4.2.3 and lower versions are vulnerable to denial of service via uncaught exception.CVE-2026-8162 · Other software · multiparty · reported by ce714d77-add3-4f53-aff5-83d477b104bbHigh 7.5
multiparty@4.2.3 and lower versions are vulnerable to denial of service via uncaught exception. By sending a multipart/form-data request with a Content-Disposition header whose filename* parameter contains a malformed percent-encoding, the parser invokes decodeURI on the value without try/catch. The resulting URIError propagates as an uncaught exception and crashes the process. Impact: any service accepting multipart uploads via multiparty is affected. Workarounds: none. Upgrade to multiparty@4.3.0 or higher.
Product
multiparty
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record cna.openjsf.org github.com
May 12, 2026multiparty@4.2.3 and lower versions are vulnerable to denial of service via uncaught exception.CVE-2026-8161 · Other software · multiparty · reported by ce714d77-add3-4f53-aff5-83d477b104bbHigh 7.5
multiparty@4.2.3 and lower versions are vulnerable to denial of service via uncaught exception. By sending a multipart/form-data request with a field name that collides with an inherited Object.prototype property such as __proto__, constructor, or toString, the parser invokes .push() on the inherited prototype value rather than an array, throwing a TypeError that propagates as an uncaught exception and crashes the process. Impact: any service accepting multipart uploads via multiparty is affected. Workarounds: none. Upgrade to multiparty@4.3.0 or higher.
Product
multiparty
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record cna.openjsf.org github.com
May 12, 2026multiparty@4.2.3 and lower versions are vulnerable to denial of service via regular expression backtracking in the Content-Disposition filename parameter parserCVE-2026-8159 · Other software · multiparty · reported by ce714d77-add3-4f53-aff5-83d477b104bbHigh 7.5
multiparty@4.2.3 and lower versions are vulnerable to denial of service via regular expression backtracking in the Content-Disposition filename parameter parser. A crafted multipart upload with a long header value can cause regex matching to take seconds, blocking the event loop. Impact: any service accepting multipart uploads via multiparty is affected. Workarounds: limiting upload sizes at the proxy or gateway layer reduces but does not eliminate the attack surface, since a small header of around 8 KB is sufficient to trigger the vulnerable backtracking. Upgrade to multiparty@4.3.0 or higher.
Product
multiparty
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record cna.openjsf.org github.com
Apr 29, 2026A WebFlux server application that processes multipart requests creates temp files for parts larger than 10 K.CVE-2026-22740 · Other software · VMware · reported by security@vmware.comMedium 6.5
A WebFlux server application that processes multipart requests creates temp files for parts larger than 10 K. Under some circumstances, temp files may remain not deleted after the request is fully processed. This allows an attacker to consume available disk space. Older, unsupported versions are also affected.
Product
Spring Framework
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record nvd.nist.gov spring.io
Apr 23, 2026SWUpdate contains an integer underflow vulnerability in the multipart upload parser in mongoose_multipart.c that allows unauthenticated attackers to cause a denCVE-2026-28525 · Other software · sbabic · reported by VulnCheckHigh 8.2
SWUpdate contains an integer underflow vulnerability in the multipart upload parser in mongoose_multipart.c that allows unauthenticated attackers to cause a denial of service by sending a crafted HTTP POST request to /upload with a malformed multipart boundary and controlled TCP stream timing. Attackers can trigger an integer underflow in the mg_http_multipart_continue_wait_for_chunk() function when the buffer length falls within a specific range, causing an out-of-bounds heap read past the allocated receive buffer to a local IPC socket.
Product
swupdate
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com vulncheck.com
Apr 17, 2026Python-Multipart is a streaming multipart parser for Python.CVE-2026-40347 · Other software · Kludex · reported by GitHubMedium 5.3
Python-Multipart is a streaming multipart parser for Python. Versions prior to 0.0.26 have a denial of service vulnerability when parsing crafted `multipart/form-data` requests with large preamble or epilogue sections. Upgrade to version 0.0.26 or later, which skips ahead to the next boundary candidate when processing leading CR/LF data and immediately discards epilogue data after the closing boundary.
Product
python-multipart
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Apr 2, 2026Allocation of Resources Without Limits or Throttling vulnerability in gleam-wisp wisp allows a denial of service via multipart form body parsing.CVE-2026-32145 · Other software · gleam-wisp · reported by 6b3ad84c-e1a6-4bf7-a703-f496b71e49dbHigh 8.7
Allocation of Resources Without Limits or Throttling vulnerability in gleam-wisp wisp allows a denial of service via multipart form body parsing. The multipart_body function bypasses configured max_body_size and max_files_size limits. When a multipart boundary is not present in a chunk, the parser takes the MoreRequiredForBody path, which appends the chunk to the output but passes the quota unchanged to the recursive call. Only the final chunk containing the boundary is counted via decrement_quota. The same pattern exists in multipart_headers, where MoreRequiredForHeaders recurses without calling decrement_body_quota. An unauthenticated attacker can exhaust server memory or disk by sending arbitrarily large multipart form submissions in a single HTTP request. This issue affects wisp: from 0.2.0 before 2.2.2.
Product
wisp
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record cna.erlef.org github.com
Mar 27, 2026The 'POST /api/v2/files' endpoint does not sanitize the 'filename' parameter from the multipart form data, allowing an attacker to write files to arbitrary locaCVE-2026-5027 · Other software · langflow-ai · reported by vulnreport@tenable.comHigh 8.8
The 'POST /api/v2/files' endpoint does not sanitize the 'filename' parameter from the multipart form data, allowing an attacker to write files to arbitrary locations on the filesystem using path traversal sequences ('../').
Product
langflow
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record tenable.com
Mar 12, 2026multipart is a fast multipart/form-data parser for python.CVE-2026-28356 · Other software · defnull · reported by GitHubHigh 7.5
multipart is a fast multipart/form-data parser for python. Prior to 1.2.2, 1.3.1 and 1.4.0-dev, the parse_options_header() function in multipart.py uses a regular expression with an ambiguous alternation, which can cause exponential backtracking (ReDoS) when parsing maliciously crafted HTTP or multipart segment headers. This can be abused for denial of service (DoS) attacks against web applications using this library to parse request headers or multipart/form-data streams. The issue is fixed in 1.2.2, 1.3.1 and 1.4.0-dev.
Product
multipart
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com access.redhat.com
Mar 6, 20262-Plan Team 1.0.4 contains an arbitrary file upload vulnerability that allows authenticated attackers to upload executable PHP files by sending multipart form dCVE-2018-25162 · Other software · 2-Plan · reported by VulnCheckHigh 7.1
2-Plan Team 1.0.4 contains an arbitrary file upload vulnerability that allows authenticated attackers to upload executable PHP files by sending multipart form data to managefile.php. Attackers can upload PHP files through the userfile1 parameter with action=upload, which are stored in the files directory and executed by the web server for remote code execution.
Product
Plan Team
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record exploit-db.com vulncheck.com
Mar 4, 2026Multer is a node.js middleware for handling `multipart/form-data`.CVE-2026-3520 · Other software · expressjs · reported by ce714d77-add3-4f53-aff5-83d477b104bbHigh 8.7
Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability in Multer prior to version 2.1.1 allows an attacker to trigger a Denial of Service (DoS) by sending malformed requests, potentially causing stack overflow. Users should upgrade to version 2.1.1 to receive a patch. No known workarounds are available.
Product
multer
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record cna.openjsf.org github.com
Feb 27, 2026Multer is a node.js middleware for handling `multipart/form-data`.CVE-2026-3304 · Other software · expressjs · reported by ce714d77-add3-4f53-aff5-83d477b104bbHigh 8.7
Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability in Multer prior to version 2.1.0 allows an attacker to trigger a Denial of Service (DoS) by sending malformed requests, potentially causing resource exhaustion. Users should upgrade to version 2.1.0 to receive a patch. No known workarounds are available.
Product
multer
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record cna.openjsf.org github.com
Feb 27, 2026Multer is a node.js middleware for handling `multipart/form-data`.CVE-2026-2359 · Other software · expressjs · reported by ce714d77-add3-4f53-aff5-83d477b104bbHigh 8.7
Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability in Multer prior to version 2.1.0 allows an attacker to trigger a Denial of Service (DoS) by dropping connection during file upload, potentially causing resource exhaustion. Users should upgrade to version 2.1.0 to receive a patch. No known workarounds are available.
Product
multer
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record cna.openjsf.org github.com
Jan 26, 2026Python-Multipart is a streaming multipart parser for Python.CVE-2026-24486 · Other software · Kludex · reported by GitHubHigh 8.6
Python-Multipart is a streaming multipart parser for Python. Prior to version 0.0.22, a Path Traversal vulnerability exists when using non-default configuration options `UPLOAD_DIR` and `UPLOAD_KEEP_FILENAME=True`. An attacker can write uploaded files to arbitrary locations on the filesystem by crafting a malicious filename. Users should upgrade to version 0.0.22 to receive a patch or, as a workaround, avoid using `UPLOAD_KEEP_FILENAME=True` in project configurations.
Product
python-multipart
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Dec 10, 2025Denial of Service vulnerability in Apache Struts, file leak in multipart request processing causes disk exhaustion.CVE-2025-66675 · Websites & servers · Apache Software Foundation · reported by security@apache.orgHigh 8.2
Denial of Service vulnerability in Apache Struts, file leak in multipart request processing causes disk exhaustion. This issue affects Apache Struts: from 2.0.0 through 6.7.4, from 7.0.0 through 7.0.3. Users are recommended to upgrade to version 6.8.0 or 7.1.1, which fixes the issue. It's related to https://cve.org/CVERecord?id=CVE-2025-64775 - this CVE addresses missing affected version 6.7.4
Product
Apache Struts
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record cve.org cwiki.apache.org
Dec 1, 2025Denial of Service vulnerability in Apache Struts, file leak in multipart request processing causes disk exhaustion.CVE-2025-64775 · Websites & servers · Apache Software Foundation · reported by security@apache.orgHigh 7.5
Denial of Service vulnerability in Apache Struts, file leak in multipart request processing causes disk exhaustion. This issue affects Apache Struts: from 2.0.0 through 6.7.0, from 7.0.0 through 7.0.3. Users are recommended to upgrade to version 6.8.0 or 7.1.1, which fixes the issue.
Product
Apache Struts
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record cwiki.apache.org openwall.com
Sep 24, 2025Datart 1.0.0-rc.3 is vulnerable to Directory Traversal in the POST /viz/image interface, since the server directly uses MultipartFile.transferTo() to save the uCVE-2025-56815 · Other software · Running-elephant · reported by MITREHigh 7.1
Datart 1.0.0-rc.3 is vulnerable to Directory Traversal in the POST /viz/image interface, since the server directly uses MultipartFile.transferTo() to save the uploaded file to a path controllable by the user, and lacks strict verification of the file name.
Product
Datart
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Sep 17, 2025Open5GS v2.7.5, prior to commit 67ba7f92bbd7a378954895d96d9d7b05d5b64615, is vulnerable to a NULL pointer dereference when a multipart/related HTTP POST requestCVE-2025-55904 · Other software · Open5gs · reported by MITREMedium 4
Open5GS v2.7.5, prior to commit 67ba7f92bbd7a378954895d96d9d7b05d5b64615, is vulnerable to a NULL pointer dereference when a multipart/related HTTP POST request with an empty HTTP body is sent to the SBI of either AMF, AUSF, BSF, NRF, NSSF, PCF, SMF, UDM, or UDR, resulting in a denial of service. This occurs in the parse_multipart function in lib/sbi/message.c.
Product
Open5gs
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Jul 17, 2025Multer is a node.js middleware for handling `multipart/form-data`.CVE-2025-7338 · Other software · expressjs · reported by ce714d77-add3-4f53-aff5-83d477b104bbHigh 7.5
Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability that is present starting in version 1.4.4-lts.1 and prior to version 2.0.2 allows an attacker to trigger a Denial of Service (DoS) by sending a malformed multi-part upload request. This request causes an unhandled exception, leading to a crash of the process. Users should upgrade to version 2.0.2 to receive a patch. No known workarounds are available.
Product
multer
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record cna.openjsf.org github.com
Jul 10, 2025For some unlikely configurations of multipart upload, an Integer Overflow vulnerability in Apache Tomcat could lead to a DoS via bypassing of size limits.CVE-2025-52520 · Websites & servers · Apache Software Foundation · reported by security@apache.orgHigh 7.5
For some unlikely configurations of multipart upload, an Integer Overflow vulnerability in Apache Tomcat could lead to a DoS via bypassing of size limits. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.8, from 10.1.0-M1 through 10.1.42, from 9.0.0.M1 through 9.0.106. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 through 8.5.100. Other, older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.9, 10.1.43 or 9.0.107, which fix the issue.
Product
Apache Tomcat
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.apache.org openwall.com
Jun 16, 2025Allocation of resources for multipart headers with insufficient limits enabled a DoS vulnerability in Apache Commons FileUpload.CVE-2025-48976 · Websites & servers · Apache Software Foundation · reported by security@apache.orgHigh 7.5
Allocation of resources for multipart headers with insufficient limits enabled a DoS vulnerability in Apache Commons FileUpload. This issue affects Apache Commons FileUpload: from 1.0 before 1.6; from 2.0.0-M1 before 2.0.0-M4. Users are recommended to upgrade to versions 1.6 or 2.0.0-M4, which fix the issue.
Product
Apache Commons FileUpload
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record lists.apache.org openwall.com
Jun 10, 2025OctoPrint versions up until and including 1.11.1 contain a vulnerability that allows any unauthenticated attacker to send a manipulated broken multipart/form-daCVE-2025-48879 · Other software · OctoPrint · reported by GitHubMedium 6.5
OctoPrint versions up until and including 1.11.1 contain a vulnerability that allows any unauthenticated attacker to send a manipulated broken multipart/form-data request to OctoPrint and through that make the web server component become unresponsive. The issue can be triggered by a broken multipart/form-data request lacking an end boundary to any of OctoPrint's endpoints implemented through the octoprint.server.util.tornado.UploadStorageFallbackHandler request handler. The request handler will get stuck in an endless busy loop, looking for a part of the request that will never come. As Tornado is single-threaded, that will effectively block the whole web server. The vulnerability has been patched in version 1.11.2.
Product
OctoPrint
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Jun 3, 2025Multer is a node.js middleware for handling `multipart/form-data`.CVE-2025-48997 · Other software · expressjs · reported by GitHubHigh 8.7
Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability that is present starting in version 1.4.4-lts.1 and prior to version 2.0.1 allows an attacker to trigger a Denial of Service (DoS) by sending an upload file request with an empty string field name. This request causes an unhandled exception, leading to a crash of the process. Users should upgrade to `2.0.1` to receive a patch. No known workarounds are available.
Product
multer
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
May 19, 2025Multer is a node.js middleware for handling `multipart/form-data`.CVE-2025-47944 · Other software · expressjs · reported by GitHubHigh 7.5
Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability that is present starting in version 1.4.4-lts.1 and prior to version 2.0.0 allows an attacker to trigger a Denial of Service (DoS) by sending a malformed multi-part upload request. This request causes an unhandled exception, leading to a crash of the process. Users should upgrade to version 2.0.0 to receive a patch. No known workarounds are available.
Product
multer
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
May 19, 2025Multer is a node.js middleware for handling `multipart/form-data`.CVE-2025-47935 · Other software · expressjs · reported by GitHubHigh 7.5
Multer is a node.js middleware for handling `multipart/form-data`. Versions prior to 2.0.0 are vulnerable to a resource exhaustion and memory leak issue due to improper stream handling. When the HTTP request stream emits an error, the internal `busboy` stream is not closed, violating Node.js stream safety guidance. This leads to unclosed streams accumulating over time, consuming memory and file descriptors. Under sustained or repeated failure conditions, this can result in denial of service, requiring manual server restarts to recover. All users of Multer handling file uploads are potentially impacted. Users should upgrade to 2.0.0 to receive a patch. No known workarounds are available.
Product
multer
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
May 19, 2025A flaw was found in the soup_multipart_new_from_message() function of the libsoup HTTP library, which is commonly used by GNOME and other applications to handleCVE-2025-4948 · Other software · Red Hat · reported by Red HatHigh 7.5
A flaw was found in the soup_multipart_new_from_message() function of the libsoup HTTP library, which is commonly used by GNOME and other applications to handle web communications. The issue occurs when the library processes specially crafted multipart messages. Due to improper validation, an internal calculation can go wrong, leading to an integer underflow. This can cause the program to access invalid memory and crash. As a result, any application or server using libsoup could be forced to exit unexpectedly, creating a denial-of-service (DoS) risk.
Product
Red Hat Enterprise Linux 10
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record access.redhat.com access.redhat.com
Apr 15, 2025By crafting a malformed file name for an attachment in a multipart message, an attacker can trick Thunderbird into including a directory listing of /tmp when thCVE-2025-2830 · Computers, phones & browsers · Mozilla · reported by security@mozilla.orgMedium 6.3
By crafting a malformed file name for an attachment in a multipart message, an attacker can trick Thunderbird into including a directory listing of /tmp when the message is forwarded or edited as a new message. This vulnerability could allow attackers to disclose sensitive information from the victim's system. This vulnerability is not limited to Linux; similar behavior has been observed on Windows as well. This vulnerability was fixed in Thunderbird 137.0.2 and Thunderbird 128.9.2.
Product
Thunderbird
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record bugzilla.mozilla.org mozilla.org
Apr 14, 2025A flaw was found in libsoup, where the soup_multipart_new_from_message() function is vulnerable to an out-of-bounds read.CVE-2025-32914 · Other software · Red Hat · reported by Red HatHigh 7.4
A flaw was found in libsoup, where the soup_multipart_new_from_message() function is vulnerable to an out-of-bounds read. This flaw allows a malicious HTTP client to induce the libsoup server to read out of bounds.
Product
Red Hat Enterprise Linux 10
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record access.redhat.com access.redhat.com
Mar 20, 2025A vulnerability in parisneo/lollms-webui v13 arises from the server's handling of multipart boundaries in file uploads.CVE-2025-1451 · Other software · parisneo · reported by security@huntr.devHigh 7.5
A vulnerability in parisneo/lollms-webui v13 arises from the server's handling of multipart boundaries in file uploads. The server does not limit or validate the length of the boundary or the characters appended to it, allowing an attacker to craft requests with excessively long boundaries, leading to resource exhaustion and eventual denial of service (DoS). Despite an attempted patch in commit 483431bb, which blocked hyphen characters from being appended to the multipart boundary, the fix is insufficient. The server remains vulnerable if other characters (e.g., '4', 'a') are used instead of hyphens. This allows attackers to exploit the vulnerability using different characters, causing resource exhaustion and service unavailability.
Product
parisneo/lollms-webui
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record huntr.com
Mar 20, 2025A vulnerability in danswer-ai/danswer v0.3.94 allows an attacker to cause a Denial of Service (DoS) by uploading a file with a malformed multipart boundary.CVE-2024-8028 · Other software · danswer-ai · reported by security@huntr.devHigh 7.5
A vulnerability in danswer-ai/danswer v0.3.94 allows an attacker to cause a Denial of Service (DoS) by uploading a file with a malformed multipart boundary. By appending a large number of characters to the end of the multipart boundary, the server continuously processes each character, rendering the application inaccessible. This issue can be exploited by sending a single crafted request, affecting all users on the server.
Product
danswer-ai/danswer
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record huntr.com
Mar 20, 2025In lm-sys/fastchat Release v0.2.36, the server fails to handle excessive characters appended to the end of multipart boundaries.CVE-2024-10907 · Other software · lm-sys · reported by security@huntr.devHigh 7.5
In lm-sys/fastchat Release v0.2.36, the server fails to handle excessive characters appended to the end of multipart boundaries. This flaw can be exploited by sending malformed multipart requests with arbitrary characters at the end of the boundary. Each extra character is processed in an infinite loop, leading to excessive resource consumption and a complete denial of service (DoS) for all users. The vulnerability is unauthenticated, meaning no user login or interaction is required for an attacker to exploit this issue.
Product
lm-sys/fastchat
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record huntr.com
Mar 20, 2025A Denial of Service (DoS) vulnerability in the multipart request boundary processing mechanism of eosphoros-ai/db-gpt v0.6.0 allows unauthenticated attackers toCVE-2024-10829 · Other software · eosphoros-ai · reported by security@huntr.devHigh 7.5
A Denial of Service (DoS) vulnerability in the multipart request boundary processing mechanism of eosphoros-ai/db-gpt v0.6.0 allows unauthenticated attackers to cause excessive resource consumption. The server fails to handle excessive characters appended to the end of multipart boundaries, leading to an infinite loop and complete denial of service for all users. This vulnerability affects all endpoints processing multipart/form-data requests.
Product
eosphoros-ai/db-gpt
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record huntr.com
Mar 20, 2025A Denial of Service (DoS) vulnerability in the multipart request boundary processing mechanism of the Invoke-AI server (version v5.0.1) allows unauthenticated aCVE-2024-10821 · Other software · invoke-ai · reported by security@huntr.devHigh 7.5
A Denial of Service (DoS) vulnerability in the multipart request boundary processing mechanism of the Invoke-AI server (version v5.0.1) allows unauthenticated attackers to cause excessive resource consumption. The server fails to handle excessive characters appended to the end of multipart boundaries, leading to an infinite loop and a complete denial of service for all users. The affected endpoint is `/api/v1/images/upload`.
Product
invoke-ai/invokeai
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record huntr.com
Jan 23, 2025@fastify/multipart is a Fastify plugin for parsing the multipart content-type.CVE-2025-24033 · Other software · fastify · reported by GitHubHigh 7.5
@fastify/multipart is a Fastify plugin for parsing the multipart content-type. Prior to versions 8.3.1 and 9.0.3, the `saveRequestFiles` function does not delete the uploaded temporary files when user cancels the request. The issue is fixed in versions 8.3.1 and 9.0.3. As a workaround, do not use `saveRequestFiles`.
Product
fastify-multipart
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Dec 2, 2024python-multipart is a streaming multipart parser for Python.CVE-2024-53981 · Other software · Kludex · reported by GitHubHigh 7.5
python-multipart is a streaming multipart parser for Python. When parsing form data, python-multipart skips line breaks (CR \r or LF \n) in front of the first boundary and any tailing bytes after the last boundary. This happens one byte at a time and emits a log event each time, which may cause excessive logging for certain inputs. An attacker could abuse this by sending a malicious request with lots of data before the first or after the last boundary, causing high CPU load and stalling the processing thread for a significant amount of time. In case of ASGI application, this could stall the event loop and prevent other requests from being processed, resulting in a denial of service (DoS). This vulnerability is fixed in 0.0.18.
Product
python-multipart
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com github.com
Oct 29, 2024In multipart/x-mixed-replace responses, `Content-Disposition: attachment` in the response header was not respected and did not force a download, which could allCVE-2024-10461 · Computers, phones & browsers · Mozilla · reported by security@mozilla.orgMedium 6.1
In multipart/x-mixed-replace responses, `Content-Disposition: attachment` in the response header was not respected and did not force a download, which could allow XSS attacks. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Thunderbird < 128.4, and Thunderbird < 132.
Product
Firefox
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record bugzilla.mozilla.org mozilla.org
Oct 8, 2024In PHP versions 8.1.* before 8.1.30, 8.2.* before 8.2.24, 8.3.* before 8.3.12, erroneous parsing of multipart form data contained in an HTTP POST request could CVE-2024-8925 · Websites & servers · PHP Group · reported by security@php.netLow 3.1
In PHP versions 8.1.* before 8.1.30, 8.2.* before 8.2.24, 8.3.* before 8.3.12, erroneous parsing of multipart form data contained in an HTTP POST request could lead to legitimate data not being processed. This could lead to malicious attacker able to control part of the submitted data being able to exclude portion of other data, potentially leading to erroneous application behavior.
Product
PHP
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record github.com lists.debian.org
Oct 1, 2024An attacker could, via a specially crafted multipart response, execute arbitrary JavaScript under the `resource://devtools` origin.CVE-2024-9394 · Computers, phones & browsers · Mozilla · reported by security@mozilla.orgHigh 7.5
An attacker could, via a specially crafted multipart response, execute arbitrary JavaScript under the `resource://devtools` origin. This could allow them to access cross-origin JSON content. This access is limited to "same site" documents by the Site Isolation feature on desktop clients, but full cross-origin access is possible on Android versions. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Firefox ESR < 115.16, Thunderbird < 128.3, and Thunderbird < 131.
Product
Firefox
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record bugzilla.mozilla.org mozilla.org
Oct 1, 2024An attacker could, via a specially crafted multipart response, execute arbitrary JavaScript under the `resource://pdf.js` origin.CVE-2024-9393 · Computers, phones & browsers · Mozilla · reported by security@mozilla.orgHigh 7.5
An attacker could, via a specially crafted multipart response, execute arbitrary JavaScript under the `resource://pdf.js` origin. This could allow them to access cross-origin PDF content. This access is limited to "same site" documents by the Site Isolation feature on desktop clients, but full cross-origin access is possible on Android versions. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Firefox ESR < 115.16, Thunderbird < 128.3, and Thunderbird < 131.
Product
Firefox
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record bugzilla.mozilla.org mozilla.org
Jun 18, 2024Actiontec WCB6200Q Multipart Boundary Stack-based Buffer Overflow Remote Code Execution Vulnerability.CVE-2024-6144 · Other software · Actiontec · reported by zdi-disclosures@trendmicro.comHigh 8.8
Actiontec WCB6200Q Multipart Boundary Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Actiontec WCB6200Q routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the HTTP server. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the HTTP server. Was ZDI-CAN-21416.
Product
WCB6200Q
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record zerodayinitiative.com zerodayinitiative.com

Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.

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