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.
88 results · page 1 of 2
Oct 23, 2026A flaw in the Node.js `zlib.ZipFile` API can cause it to return bytes that do not belong to the requested entry after the local and central header validation faCVE-2026-106070 · Other software · nodejs · reported by support@hackerone.comLow 3.7
A flaw in the Node.js `zlib.ZipFile` API can cause it to return bytes that do not belong to the requested entry after the local and central header validation fails. When `zipEntry.modified` is read on an archive whose local header does not match its central directory, either directly or while compacting the archive, the validation error is caught but the parsed local header is left cached without a content offset. A later content read then returns attacker-controlled bytes from the start of the file instead of rejecting the archive, and CRC-32 verification still passes because the attacker controls the central directory CRC. A Node.js-based scanner can therefore approve different content from what another ZIP implementation extracts from the same archive. This vulnerability affects Node.js **26.x**.
- Product
- node
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 21, 2026The CompressionFilter class uses ZLib to deflate and inflate data sent and received.CVE-2026-47321 · Websites & servers · Apache Software Foundation · reported by security@apache.orgHigh 7.5
The CompressionFilter class uses ZLib to deflate and inflate data sent and received. When we inflate incoming data, the filter does not control the resulting size, and create a buffer no matter what. Some compressed data may have a compression ration greater than 1 thousand, leading to an exhaustion of the application memory, as we don't control the deflated size. The fix adds such a control by allowing the application developer to provide a fixed size limit, which when reached throws an exception. It also allows the user to provide a compression ratio that should not be exceeded, protected the application from small inflated files that inflate in gigantic files, but with a grace limit for the resulting size (1Mb) to avoid false positive (like a very small file inflating with a high ratio, but resulting with a acceptable size, like a few thousands bytes) For application using this feature, it is highly recommended to create the CompressionFilter and to pass the maximum limit as a forth constructor parameter, maxDecompressedSize: public CompressionFilter(final boolean compressInbound, final boolean compressOutbound, final int compressionLevel, final int maxDecompressedS
- Product
- Apache MINA
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordlists.apache.orgopenwall.com
Sep 15, 2026adm-zip versions 0.5.14 through 0.6.0 fail to apply zlib decompression output limits when ZIP entries declare zero uncompressed size.CVE-2026-92000 · Other software · cthackers · reported by VulnCheckHigh 8.7
adm-zip versions 0.5.14 through 0.6.0 fail to apply zlib decompression output limits when ZIP entries declare zero uncompressed size. Attackers can craft malicious ZIP archives with highly compressible entries declaring zero size to exhaust memory and cause denial of service.
- Product
- adm-zip
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 14, 2026Mattermost versions 11.9.x <= 11.9.0, 11.8.x <= 11.8.4, 11.7.x <= 11.7.7, 10.11.x <= 10.11.22 fail to limit size of unpacked SDP messages compressed with zlib, CVE-2026-5132 · Other software · Mattermost · reported by responsibledisclosure@mattermost.comMedium 6.5
Mattermost versions 11.9.x <= 11.9.0, 11.8.x <= 11.8.4, 11.7.x <= 11.7.7, 10.11.x <= 10.11.22 fail to limit size of unpacked SDP messages compressed with zlib, which allows attacker to deny service or crash server via sending many SDP messages that unpack to large size.. Mattermost Advisory ID: MMSA-2026-00643
- Product
- Mattermost
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 4, 2026undici bundles a WebSocket client whose permessage-deflate size-limit cleanup removes all listeners from the internal zlib inflate stream, including its error lCVE-2026-85024 · Other software · undici · reported by ce714d77-add3-4f53-aff5-83d477b104bbMedium 5.9
undici bundles a WebSocket client whose permessage-deflate size-limit cleanup removes all listeners from the internal zlib inflate stream, including its error listener, while that stream can still emit. When a remote peer sends a compressed payload that crosses the built-in 128 MiB decompressed-payload limit and then contains a malformed DEFLATE byte, the inflate stream emits a data error with no listener attached, which Node.js treats as a fatal unhandled error and terminates the entire process. Exploitation is remote and unauthenticated, requires no application mistake, and is asymmetric, since roughly 130 KB on the wire expands past the limit and crashes the process, and reconnecting can repeat the crash. This affects undici versions from 6.25.0 up to 6.28.1, from 7.28.0 up to 7.29.1, and from 8.1.0 up to 8.10.2. Users should upgrade to undici 6.28.1, 7.29.1, or 8.10.2.
- Product
- undici
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordcna.openjsf.orggithub.com
Sep 3, 2026zlib versions 1.3.1.2 through 1.3.2 contain a heap buffer overflow vulnerability in the gz_vacate() function when processing non-blocking gzwrite() operations wCVE-2026-85091 · Other software · zlib · reported by VulnCheckHigh 8.3
zlib versions 1.3.1.2 through 1.3.2 contain a heap buffer overflow vulnerability in the gz_vacate() function when processing non-blocking gzwrite() operations with stale external buffer pointers. Attackers can trigger the overflow by calling gzprintf() or gzvprintf() after a write stall, causing an unchecked memmove() to write beyond the internal input buffer boundary.
- Product
- zlib
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgist.github.comgithub.com
Aug 28, 2026CodeChecker's massStoreRun processing path performs one-shot decompression of attacker-controlled, Base64-encoded zlib data without enforcing a maximum decompreCVE-2026-58107 · Other software · Ericsson · reported by 85b1779b-6ecd-4f52-bcc5-73eac4659dcfMedium 5.5
CodeChecker's massStoreRun processing path performs one-shot decompression of attacker-controlled, Base64-encoded zlib data without enforcing a maximum decompressed size. An authenticated user with permission to store analysis runs can submit a highly compressed payload that expands to a significantly larger byte sequence. Because the entire decompressed output is materialized in memory before being written to a temporary file, a sufficiently large payload may exhaust process or host memory and consume substantial disk space, resulting in denial of service.
- Product
- CodeChecker
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 24, 2026zlib 1.2.11 through 1.3.2 contains a heap buffer overflow: after an underlying write() fails, gz_write() returns without resetting strm.next_in, leaving it poinCVE-2026-76844 · Other software · zlib · reported by VulnCheckHigh 8.3
zlib 1.2.11 through 1.3.2 contains a heap buffer overflow: after an underlying write() fails, gz_write() returns without resetting strm.next_in, leaving it pointed at the caller's buffer. A later gz* write call then derives a position from the stale pointer and writes past a heap allocation; any write() failure reaches it, including EPIPE on a blocking descriptor, and in versions before 1.3.1.2 the failed write must be followed by a gzclearerr() call.
- Product
- zlib
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgist.github.comgithub.com
Aug 20, 2026tor before 0.4.9.9 was prone to an infinite loop when decompressing a truncated zlib/gzip stream with done=1.CVE-2026-77640 · Other software · torproject · reported by MITRELow 3.7
tor before 0.4.9.9 was prone to an infinite loop when decompressing a truncated zlib/gzip stream with done=1. A truncated stream never reaches Z_STREAM_END, causing zlib to return Z_BUF_ERROR with no input remaining, which buf_add_compress() mistook for a full output buffer and retried forever. Fixed by returning TOR_COMPRESS_ERROR in that case so the caller can abort cleanly. This is TROVE-2026-021.
- Product
- Tor
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 20, 2026Tor before 0.4.9.9 was prone to a compression bomb bypass where an attacker could concatenate many gzip or zlib sub-streams, each just under the per-stream deteCVE-2026-77639 · Other software · torproject · reported by MITREMedium 5.3
Tor before 0.4.9.9 was prone to a compression bomb bypass where an attacker could concatenate many gzip or zlib sub-streams, each just under the per-stream detection threshold, to avoid the compression bomb check entirely. This is TROVE-2026-022.
- Product
- Tor
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 3, 2026A flaw in Node.js allows a spoofed `TypedArray` `byteLength` to trigger a reachable assertion in the synchronous `node:zlib` APIs, causing the entire process toCVE-2026-58045 · Other software · nodejs · reported by support@hackerone.comMedium 6.2
A flaw in Node.js allows a spoofed `TypedArray` `byteLength` to trigger a reachable assertion in the synchronous `node:zlib` APIs, causing the entire process to crash. All 11 synchronous zlib functions are affected. Repeated exploitation of this condition can result in a denial of service. This vulnerability affects Node.js **22.x**, **24.x**, and **26.x**.
- Product
- node
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 24, 2026FFmpeg through 8.1.2, fixed in commit 8670835, contains an information disclosure vulnerability in the LCL/ZLIB video decoder that allows attackers to expose unCVE-2026-66038 · Other software · FFmpeg · reported by VulnCheckHigh 7.1
FFmpeg through 8.1.2, fixed in commit 8670835, contains an information disclosure vulnerability in the LCL/ZLIB video decoder that allows attackers to expose uninitialized heap memory by supplying a valid zlib stream that inflates to fewer bytes than the expected frame size. The zlib_decomp() function in lcldec.c treats short decompression as non-fatal and continues to the RGB24 conversion path, which copies a full frame's worth of rows from the allocation buffer using original frame dimensions, causing uninitialized heap contents including pointer-derived allocator bytes to be copied into the attacker-observable AVFrame output and potentially defeating ASLR in long-lived media processing services.
- Product
- FFmpeg
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordcode.ffmpeg.orgcode.ffmpeg.org
Apr 30, 2026Dissection engine zlib decompression crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of serviceCVE-2026-6535 · Other software · Wireshark Foundation · reported by cve@gitlab.comMedium 5.5
Dissection engine zlib decompression crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
- Product
- Wireshark
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Apr 16, 2026zlib is a Ruby interface for the zlib compression/decompression library.CVE-2026-27820 · Other software · ruby · reported by GitHubLow 1.7
zlib is a Ruby interface for the zlib compression/decompression library. Versions 3.0.0 and below, 3.1.0, 3.1.1, 3.2.0 and 3.2.1 contain a buffer overflow vulnerability in the Zlib::GzipReader. The zstream_buffer_ungets function prepends caller-provided bytes ahead of previously produced output but fails to guarantee the backing Ruby string has enough capacity before the memmove shifts the existing data. This can lead to memory corruption when the buffer length exceeds capacity. This issue has been fixed in versions 3.0.1, 3.1.2 and 3.2.3.
- Product
- zlib
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.comhackerone.com
Apr 8, 2026Unfurl before 2026.04 contains an unbounded zlib decompression vulnerability in parse_compressed.py that allows remote attackers to cause denial of service.CVE-2026-40036 · Other software · obsidianforensics · reported by VulnCheckHigh 8.7
Unfurl before 2026.04 contains an unbounded zlib decompression vulnerability in parse_compressed.py that allows remote attackers to cause denial of service. Attackers can submit highly compressed payloads via URL parameters to the /json/visjs endpoint that expand to gigabytes, exhausting server memory and crashing the service.
- Product
- unfurl
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Mar 29, 2026Perl versions from 5.9.4 before 5.40.4-RC1, from 5.41.0 before 5.42.2-RC1, from 5.43.0 before 5.43.9 contain a vulnerable version of Compress::Raw::Zlib.CVE-2026-4176 · Other software · SHAY · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441eCritical 9.8
Perl versions from 5.9.4 before 5.40.4-RC1, from 5.41.0 before 5.42.2-RC1, from 5.43.0 before 5.43.9 contain a vulnerable version of Compress::Raw::Zlib. Compress::Raw::Zlib is included in the Perl package as a dual-life core module, and is vulnerable to CVE-2026-3381 due to a vendored version of zlib which has several vulnerabilities, including CVE-2026-27171. The bundled Compress::Raw::Zlib was updated to version 2.221 in Perl blead commit c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94.
- Product
- perl
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.comlists.security.metacpan.org
Mar 24, 2026Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in OSGeo gdal (frmts/zlib/contrib/infback9 modules).CVE-2026-4738 · Other software · OSGeo · reported by cve_disclosure@tech.gov.sgCritical 9.4
Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in OSGeo gdal (frmts/zlib/contrib/infback9 modules). This vulnerability is associated with program files inftree9.C. This issue affects gdal: before 3.11.0.
- Product
- gdal
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Mar 4, 2026Compress::Raw::Zlib versions through 2.219 for Perl use potentially insecure versions of zlib.CVE-2026-3381 · Other software · PMQS · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441eCritical 9.8
Compress::Raw::Zlib versions through 2.219 for Perl use potentially insecure versions of zlib. Compress::Raw::Zlib includes a copy of the zlib library. Compress::Raw::Zlib version 2.220 includes zlib 1.3.2, which addresses findings fron the 7ASecurity audit of zlib. The includes fixs for CVE-2026-27171.
- Product
- Compress::Raw::Zlib
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record7asecurity.comgithub.com
Feb 17, 2026zlib before 1.3.2 allows CPU consumption via crc32_combine64 and crc32_combine_gen64 because x2nmodp can do right shifts within a loop that has no termination cCVE-2026-27171 · Other software · zlib · reported by MITRELow 2.9
zlib before 1.3.2 allows CPU consumption via crc32_combine64 and crc32_combine_gen64 because x2nmodp can do right shifts within a loop that has no termination condition.
- Product
- zlib
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record7asecurity.com7asecurity.com
Feb 14, 2026In the Linux kernel, the following vulnerability has been resolved: btrfs: zlib: fix the folio leak on S390 hardware acceleration [BUG] After commit aa60fe12bCVE-2026-23147 · Computers, phones & browsers · Linux · reported by 416baaa9-dc9f-4396-8d5f-8c081fb06d67Medium 5.5
In the Linux kernel, the following vulnerability has been resolved: btrfs: zlib: fix the folio leak on S390 hardware acceleration [BUG] After commit aa60fe12b4f4 ("btrfs: zlib: refactor S390x HW acceleration buffer preparation"), we no longer release the folio of the page cache of folio returned by btrfs_compress_filemap_get_folio() for S390 hardware acceleration path. [CAUSE] Before that commit, we call kumap_local() and folio_put() after handling each folio. Although the timing is not ideal (it release previous folio at the beginning of the loop, and rely on some extra cleanup out of the loop), it at least handles the folio release correctly. Meanwhile the refactored code is easier to read, it lacks the call to release the filemap folio. [FIX] Add the missing folio_put() for copy_data_into_buffer().
- Product
- Linux
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgit.kernel.orggit.kernel.org
Jan 27, 2026Vulnerability in root-project root (builtins/zlib modules).CVE-2026-24812 · Other software · root-project · reported by cve_disclosure@tech.gov.sgCritical 9.3
Vulnerability in root-project root (builtins/zlib modules). This vulnerability is associated with program files inftrees.C. This issue affects root: through 6.36.00-rc1.
- Product
- root
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jan 27, 2026Vulnerability in root-project root (builtins/zlib modules).CVE-2026-24811 · Other software · root-project · reported by cve_disclosure@tech.gov.sgCritical 9.3
Vulnerability in root-project root (builtins/zlib modules). This vulnerability is associated with program files inffast.C. This issue affects root.
- Product
- root
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jan 27, 2026Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in tildearrow furnace (extern/zlib modules).CVE-2026-24800 · Other software · tildearrow · reported by cve_disclosure@tech.gov.sgCritical 10
Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in tildearrow furnace (extern/zlib modules). This vulnerability is associated with program files inflate.C.
- Product
- furnace
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jan 27, 2026Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in davisking dlib (dlib/external/zlib modules).CVE-2026-24799 · Other software · davisking · reported by cve_disclosure@tech.gov.sgMedium 5.2
Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in davisking dlib (dlib/external/zlib modules). This vulnerability is associated with program files inflate.C. This issue affects dlib: before v19.24.9.
- Product
- dlib
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jan 27, 2026Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in azerothcore azerothcore-wotlk (deps/zlib modules).CVE-2026-24793 · Other software · azerothcore · reported by cve_disclosure@tech.gov.sgCritical 10
Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in azerothcore azerothcore-wotlk (deps/zlib modules). This vulnerability is associated with program files inflate.C. This issue affects azerothcore-wotlk: through v4.0.0.
- Product
- azerothcore-wotlk
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jan 7, 2026zlib versions up to and including 1.3.1.2 include a global buffer overflow in the untgz utility located under contrib/untgz.CVE-2026-22184 · Other software · zlib software · reported by VulnCheckMedium 4.6
zlib versions up to and including 1.3.1.2 include a global buffer overflow in the untgz utility located under contrib/untgz. The vulnerability is limited to the standalone demonstration utility and does not affect the core zlib compression library. The flaw occurs when a user executes the untgz command with an excessively long archive name supplied via the command line, leading to an out-of-bounds write in a fixed-size global buffer.
- Product
- zlib
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.comseclists.org
Jun 24, 2025Kaleris NAVIS N4 ULC (Ultra Light Client) communicates insecurely using zlib-compressed data over HTTP.CVE-2025-5087 · Other software · Kaleris · reported by ics-cert@hq.dhs.govMedium 6
Kaleris NAVIS N4 ULC (Ultra Light Client) communicates insecurely using zlib-compressed data over HTTP. An attacker capable of observing network traffic between Ultra Light Clients and N4 servers can extract sensitive information, including plaintext credentials.
- Product
- Navis N4
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 14, 2025A vulnerability exists in the inftrees.c component of the zlib library, which is bundled within the PointCloudLibrary (PCL).CVE-2025-4638 · Other software · PointCloudLibrary · reported by cve_disclosure@tech.gov.sgCritical 9.2
A vulnerability exists in the inftrees.c component of the zlib library, which is bundled within the PointCloudLibrary (PCL). This issue may allow context-dependent attackers to cause undefined behavior by exploiting improper pointer arithmetic. Since version 1.14.0, PCL by default uses a zlib installation from the system, unless the user sets WITH_SYSTEM_ZLIB=FALSE. So this potential vulnerability is only relevant if the PCL version is older than 1.14.0 or the user specifically requests to not use the system zlib.
- Product
- pcl
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 5, 2025When libcurl is asked to perform automatic gzip decompression of content-encoded HTTP responses with the `CURLOPT_ACCEPT_ENCODING` option, **using zlib 1.2.0.3 CVE-2025-0725 · Other software · curl · reported by 2499f714-1537-4658-8207-48ae4bb9eae9High 7.3
When libcurl is asked to perform automatic gzip decompression of content-encoded HTTP responses with the `CURLOPT_ACCEPT_ENCODING` option, **using zlib 1.2.0.3 or older**, an attacker-controlled integer overflow would make libcurl perform a buffer overflow.
- Product
- curl
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jan 21, 2025BizLibrary: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CVE-2025-23580 · WordPress plugins & themes · reported by PatchstackHigh 7.1
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Matthew BizLibrary bizlibrary allows Reflected XSS.This issue affects BizLibrary: from n/a through <= 1.1.
- Product
- BizLibrary
- Affected
- up to 1.1
- What to do
- Affects up to 1.1. Update BizLibrary to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Jan 19, 2025In the Linux kernel, the following vulnerability has been resolved: btrfs: zlib: fix avail_in bytes for s390 zlib HW compression path Since the input data lenCVE-2024-57923 · Computers, phones & browsers · Linux · reported by 416baaa9-dc9f-4396-8d5f-8c081fb06d67Medium 5.5
In the Linux kernel, the following vulnerability has been resolved: btrfs: zlib: fix avail_in bytes for s390 zlib HW compression path Since the input data length passed to zlib_compress_folios() can be arbitrary, always setting strm.avail_in to a multiple of PAGE_SIZE may cause read-in bytes to exceed the input range. Currently this triggers an assert in btrfs_compress_folios() on the debug kernel (see below). Fix strm.avail_in calculation for S390 hardware acceleration path. assertion failed: *total_in <= orig_len, in fs/btrfs/compression.c:1041 ------------[ cut here ]------------ kernel BUG at fs/btrfs/compression.c:1041! monitor event: 0040 ilc:2 [#1] PREEMPT SMP CPU: 16 UID: 0 PID: 325 Comm: kworker/u273:3 Not tainted 6.13.0-20241204.rc1.git6.fae3b21430ca.300.fc41.s390x+debug #1 Hardware name: IBM 3931 A01 703 (z/VM 7.4.0) Workqueue: btrfs-delalloc btrfs_work_helper Krnl PSW : 0704d00180000000 0000021761df6538 (btrfs_compress_folios+0x198/0x1a0) R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0 RI:0 EA:3 Krnl GPRS: 0000000080000000 0000000000000001 0000000000000047 0000000000000000 0000000000000006 ffffff01757bb000 000001976232fc
- Product
- Linux
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgit.kernel.orggit.kernel.org
Jan 8, 2024An out-of-bounds write vulnerability exists in the LXT2 zlib block decompression functionality of GTKWave 3.3.115.CVE-2023-38657 · Other software · GTKWave · reported by talos-cna@cisco.comHigh 7.8
An out-of-bounds write vulnerability exists in the LXT2 zlib block decompression functionality of GTKWave 3.3.115. A specially crafted .lxt2 file can lead to arbitrary code execution. A victim would need to open a malicious file to trigger this vulnerability.
- Product
- GTKWave
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordlists.debian.orgtalosintelligence.com
Jan 8, 2024An integer overflow vulnerability exists in the LXT2 zlib block allocation functionality of GTKWave 3.3.115.CVE-2023-35989 · Other software · GTKWave · reported by talos-cna@cisco.comHigh 7.8
An integer overflow vulnerability exists in the LXT2 zlib block allocation functionality of GTKWave 3.3.115. A specially crafted .lxt2 file can lead to arbitrary code execution. A victim would need to open a malicious file to trigger this vulnerability.
- Product
- GTKWave
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordlists.debian.orgtalosintelligence.com
Jan 4, 2024Cloudflare version of zlib library was found to be vulnerable to memory corruption issues affecting the deflation algorithm implementation (deflate.c).CVE-2023-6992 · Other software · Cloudflare · reported by cna@cloudflare.comMedium 4
Cloudflare version of zlib library was found to be vulnerable to memory corruption issues affecting the deflation algorithm implementation (deflate.c). The issues resulted from improper input validation and heap-based buffer overflow. A local attacker could exploit the problem during compression using a crafted malicious file potentially leading to denial of service of the software. Patches: The issue has been patched in commit 8352d10 https://github.com/cloudflare/zlib/commit/8352d108c05db1bdc5ac3bdf834dad641694c13c . The upstream repository is not affected.
- Product
- zlib
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Nov 22, 2023Buffer Overflow vulnerability in zlib-ng minizip-ng v.4.0.2 allows an attacker to execute arbitrary code via a crafted file to the mz_path_has_slash function inCVE-2023-48107 · Other software · Zlib-ng · reported by MITREHigh 8.8
Buffer Overflow vulnerability in zlib-ng minizip-ng v.4.0.2 allows an attacker to execute arbitrary code via a crafted file to the mz_path_has_slash function in the mz_os.c file.
- Product
- Minizip-ng
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.comlists.fedoraproject.org
Nov 22, 2023Buffer Overflow vulnerability in zlib-ng minizip-ng v.4.0.2 allows an attacker to execute arbitrary code via a crafted file to the mz_path_resolve function in tCVE-2023-48106 · Other software · Zlib-ng · reported by MITREHigh 8.8
Buffer Overflow vulnerability in zlib-ng minizip-ng v.4.0.2 allows an attacker to execute arbitrary code via a crafted file to the mz_path_resolve function in the mz_os.c file.
- Product
- Minizip-ng
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2023MiniZip in zlib through 1.3 has an integer overflow and resultant heap-based buffer overflow in zipOpenNewFileInZip4_64 via a long filename, comment, or extra fCVE-2023-45853 · Other software · zlib · reported by MITRECritical 9.8
MiniZip in zlib through 1.3 has an integer overflow and resultant heap-based buffer overflow in zipOpenNewFileInZip4_64 via a long filename, comment, or extra field. NOTE: MiniZip is not a supported part of the zlib product. NOTE: pyminizip through 0.2.6 is also vulnerable because it bundles an affected zlib version, and exposes the applicable MiniZip code through its compress API.
- Product
- zlib
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordopenwall.comopenwall.com
May 15, 2023BizLibrary: Does not sanitise and escape some of its settingsCVE-2023-0892 · WordPress plugins & themes · reported by WPScanMedium 4.8
The BizLibrary WordPress plugin through 1.1 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)
- Product
- BizLibrary
- Affected
- up to 1.1
- What to do
- Affects up to 1.1. Update BizLibrary to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Aug 5, 2022zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow in inflate in inflate.c via a large gzip header extra field.CVE-2022-37434 · Other software · Siemens · reported by MITRECritical 9.8
zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow in inflate in inflate.c via a large gzip header extra field. NOTE: only applications that call inflateGetHeader are affected. Some common applications bundle the affected zlib source code but may be unable to call inflateGetHeader (e.g., see the nodejs/node reference).
- Product
- SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordseclists.orgseclists.org
Jul 19, 2022DOS / potential heap overwrite in qtdemux using zlib decompression.CVE-2022-2122 · Other software · Gstreamer · reported by Red HatHigh 7.8
DOS / potential heap overwrite in qtdemux using zlib decompression. Integer overflow in qtdemux element in qtdemux_inflate function which causes a segfault, or could cause a heap overwrite, depending on libc and OS. Depending on the libc used, and the underlying OS capabilities, it could be just a segfault or a heap overwrite.
- Product
- Gstreamer
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgitlab.freedesktop.orglists.debian.org
Jul 19, 2022DOS / potential heap overwrite in mkv demuxing using zlib decompression.CVE-2022-1922 · Other software · Gstreamer · reported by Red HatHigh 7.8
DOS / potential heap overwrite in mkv demuxing using zlib decompression. Integer overflow in matroskademux element in gst_matroska_decompress_data function which causes a segfault, or could cause a heap overwrite, depending on libc and OS. Depending on the libc used, and the underlying OS capabilities, it could be just a segfault or a heap overwrite. If the libc uses mmap for large chunks, and the OS supports mmap, then it is just a segfault (because the realloc before the integer overflow will use mremap to reduce the size of the chunk, and it will start to write to unmapped memory). However, if using a libc implementation that does not use mmap, or if the OS does not support mmap while using libc, then this could result in a heap overwrite.
- Product
- Gstreamer
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgitlab.freedesktop.orglists.debian.org
May 24, 2022JavaEZ is a library that adds new functions to make Java easier.CVE-2022-29249 · Other software · JavaEZLib · reported by GitHubHigh 7.5
JavaEZ is a library that adds new functions to make Java easier. A weakness in JavaEZ 1.6 allows force decryption of locked text by unauthorized actors. The issue is NOT critical for non-secure applications, however may be critical in a situation where the highest levels of security are required. This issue ONLY affects v1.6 and does not affect anything pre-1.6. The vulnerability has been patched in release 1.7. Currently, there is no way to fix the issue without upgrading.
- Product
- JavaEZ
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Mar 25, 2022zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if the input has many distant matches.CVE-2018-25032 · Other software · Siemens · reported by MITREHigh 7.5
zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if the input has many distant matches.
- Product
- SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordseclists.orgseclists.org
Apr 30, 2021GalaxyClient version 2.0.28.9 loads unsigned DLLs such as zlib1.dll, libgcc_s_dw2-1.dll and libwinpthread-1.dll from PATH, which allows an attacker to potentialCVE-2021-26807 · Other software · GOG · reported by MITREHigh 7.8
GalaxyClient version 2.0.28.9 loads unsigned DLLs such as zlib1.dll, libgcc_s_dw2-1.dll and libwinpthread-1.dll from PATH, which allows an attacker to potentially run code locally through unsigned DLL loading.
- Product
- Galaxy
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordilluminati.servicesgog.com
Jan 26, 2021PlugIns\IDE_ACDStd.apl in ACDSee Professional 2021 14.0 1721 has a User Mode Write Access Violation starting at IDE_ACDStd!zlibVersion+0x0000000000004e5e via a CVE-2021-26025 · Other software · Acdsee · reported by MITREHigh 7.8
PlugIns\IDE_ACDStd.apl in ACDSee Professional 2021 14.0 1721 has a User Mode Write Access Violation starting at IDE_ACDStd!zlibVersion+0x0000000000004e5e via a crafted BMP image.
- Product
- Photo Studio 2021
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Apr 7, 2020The ZlibDecoders in Netty 4.1.x before 4.1.46 allow for unbounded memory allocation while decoding a ZlibEncoded byte stream.CVE-2020-11612 · Other software · Netty · reported by MITREHigh 7.5
The ZlibDecoders in Netty 4.1.x before 4.1.46 allow for unbounded memory allocation while decoding a ZlibEncoded byte stream. An attacker could send a large ZlibEncoded byte stream to the Netty server, forcing the server to allocate all of its free memory to a single decoder.
- Product
- Netty
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 29, 2019TightVNC code version 1.3.10 contains null pointer dereference in HandleZlibBPP function, which results Denial of System (DoS).CVE-2019-15680 · Other software · Kaspersky · reported by vulnerability@kaspersky.comHigh 7.5
TightVNC code version 1.3.10 contains null pointer dereference in HandleZlibBPP function, which results Denial of System (DoS). This attack appear to be exploitable via network connectivity.
- Product
- TightVNC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordcert-portal.siemens.comlists.debian.org
Jun 18, 2019An issue was discovered in zlib_decompress_extra in modules/demux/mkv/util.cpp in VideoLAN VLC media player 3.x through 3.0.7.CVE-2019-12874 · Other software · Videolan · reported by MITRECritical 9.8
An issue was discovered in zlib_decompress_extra in modules/demux/mkv/util.cpp in VideoLAN VLC media player 3.x through 3.0.7. The Matroska demuxer, while parsing a malformed MKV file type, has a double free.
- Product
- VLC Media Player
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgit.videolan.orglists.opensuse.org
Apr 23, 2019io/ZlibCompression.cc in the decompression component in Dropbox Lepton 1.2.1 allows attackers to cause a denial of service (heap-based buffer overflow and appliCVE-2018-20819 · Other software · Dropbox · reported by MITREHigh 7.8
io/ZlibCompression.cc in the decompression component in Dropbox Lepton 1.2.1 allows attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact by crafting a jpg image file. The root cause is a missing check of header payloads that may be (incorrectly) larger than the maximum file size.
- Product
- Lepton
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 18, 2018In Wireshark 2.6.0 to 2.6.1, 2.4.0 to 2.4.7, and 2.2.0 to 2.2.15, dissectors that support zlib decompression could crash.CVE-2018-14340 · Other software · Wireshark · reported by MITREHigh 7.5
In Wireshark 2.6.0 to 2.6.1, 2.4.0 to 2.4.7, and 2.2.0 to 2.2.15, dissectors that support zlib decompression could crash. This was addressed in epan/tvbuff_zlib.c by rejecting negative lengths to avoid a buffer over-read.
- Product
- Wireshark
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordlists.opensuse.orgsecurityfocus.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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