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.
488 results · page 1 of 10
Oct 19, 2026Cpanel::JSON::XS versions from 4.51 before 4.80 for Perl allow quadratic CPU use by revalidating the remaining buffer per value in incr_parse.CVE-2026-110688 · Websites & servers · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441e
Cpanel::JSON::XS versions from 4.51 before 4.80 for Perl allow quadratic CPU use by revalidating the remaining buffer per value in incr_parse. At the first non-ASCII byte in a string, the decoder validates UTF-8 from there to the end of its input. incr_parse decodes each buffered value with a fresh decoder, so every value revalidates the rest of the buffer, and doubling the input quadruples the work. A peer that sends about a megabyte of ordinary non-ASCII JSON in one read ties up the process for seconds of CPU time.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.commetacpan.org
Oct 19, 2026Cpanel::JSON::XS versions from 4.43 before 4.80 for Perl misorder byte-string keys during canonical encoding in utf16_cmp.CVE-2026-110687 · Websites & servers · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441e
Cpanel::JSON::XS versions from 4.43 before 4.80 for Perl misorder byte-string keys during canonical encoding in utf16_cmp. canonical sorts keys by UTF-16 code units. When any key in a hash is UTF-8 flagged, every key is decoded as UTF-8 for the comparison, including byte-string keys that the encoder writes out as Latin-1 characters. A byte-string key whose bytes are valid UTF-8 is sorted out of order, and two keys that encode differently can compare equal and are left in hash order. The same data can encode to different canonical documents across processes.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.commetacpan.org
Oct 19, 2026Cpanel::JSON::XS versions before 4.80 for Perl use freed filter callbacks when a filter removes itself during decoding in decode_hv.CVE-2026-110686 · Websites & servers · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441e
Cpanel::JSON::XS versions before 4.80 for Perl use freed filter callbacks when a filter removes itself during decoding in decode_hv. A decode copies the parser's filter_json_object and filter_json_single_key_object callbacks without taking references to them. A filter callback that removes the last single-key filter frees the callback table while the decode in progress still uses it. The next object is dispatched through freed memory and can crash the process.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.commetacpan.org
Oct 19, 2026Cpanel::JSON::XS versions before 4.80 for Perl leak the decoded arguments of a tagged value when its THAW method dies in decode_tag.CVE-2026-110685 · Websites & servers · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441e
Cpanel::JSON::XS versions before 4.80 for Perl leak the decoded arguments of a tagged value when its THAW method dies in decode_tag. With allow_tags, a tagged value's class name and argument array are decoded and passed to the class's THAW method. Both are released only after THAW returns, so a THAW that dies leaves the whole decoded argument structure allocated. Each rejected document leaks data of a size the sender chooses, so a process that catches the error and keeps running exhausts its memory.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.commetacpan.org
Oct 19, 2026Cpanel::JSON::XS versions from 3.0202 before 4.80 for Perl leak memory and retain overloaded objects when encoding values as strings in encode_stringify.CVE-2026-110684 · Websites & servers · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441e
Cpanel::JSON::XS versions from 3.0202 before 4.80 for Perl leak memory and retain overloaded objects when encoding values as strings in encode_stringify. encode_stringify writes a value in its string form under allow_stringify, under convert_blessed for objects without TO_JSON, and under allow_bignum. For an array or hash object with a "" overload, and from 4.20 a scalar object, it takes an extra reference that is never released, so the object and everything it references are never freed. From 4.10 it also never frees its copy of the string. Repeatedly encoding data that contains such values grows process memory without bound.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.commetacpan.org
Oct 19, 2026Cpanel::JSON::XS versions from 4.42 before 4.80 for Perl let input chunking change the decoded value of top-level numbers in incr_parse.CVE-2026-110682 · Websites & servers · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441e
Cpanel::JSON::XS versions from 4.42 before 4.80 for Perl let input chunking change the decoded value of top-level numbers in incr_parse. allow_nonref is enabled by default and incr_parse inherits it. A top-level number, true, false or null has no closing delimiter, so the incremental parser decodes whatever has arrived. The bytes 12 decode as one value when read together, but as 1 and then 2 when split across two reads. A peer that can influence read boundaries can change how many messages a stream consumer decodes and what values they carry.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.commetacpan.org
Oct 19, 2026Cpanel::JSON::XS versions before 4.80 for Perl use the parent interpreter's scalars from a parser object cloned into a new ithread.CVE-2026-110681 · Websites & servers · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441e
Cpanel::JSON::XS versions before 4.80 for Perl use the parent interpreter's scalars from a parser object cloned into a new ithread. A parser object holds its callbacks and its incremental parse buffer as raw scalar pointers. When a thread is created, these are copied into the new interpreter unchanged, so the child's parser uses, and later frees, scalars that belong to the parent and may already have been freed there. A parser created before a thread starts and used inside it can call freed callbacks, corrupt reference counts and crash the process.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.commetacpan.org
Oct 19, 2026Cpanel::JSON::XS versions from 4.20 before 4.80 for Perl write out of bounds when a tied or shared hash grows during canonical encoding in encode_hv.CVE-2026-110680 · Websites & servers · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441e
Cpanel::JSON::XS versions from 4.20 before 4.80 for Perl write out of bounds when a tied or shared hash grows during canonical encoding in encode_hv. With canonical, the keys of a tied or threads::shared hash are counted before a second pass collects them for sorting. The encoder uses a fixed 64-entry stack array or, for larger counts, a heap array sized from the first pass. If the second pass exceeds that capacity, entries are written out of bounds before the counts are compared. This corrupts stack or heap memory and can crash the process.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.commetacpan.org
Oct 19, 2026Cpanel::JSON::XS versions before 4.80 for Perl allow memory exhaustion by buffering incremental input past max_size in incr_parse.CVE-2026-110678 · Websites & servers · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441e
Cpanel::JSON::XS versions before 4.80 for Perl allow memory exhaustion by buffering incremental input past max_size in incr_parse. The parser appends each chunk to its buffer. In scalar or list context, it compares max_size with how far it has progressed, not with the buffer length. A chunk that starts with a NUL byte stops the parser before it progresses, and a call in void context skips the check, so the buffer grows without limit. A peer streaming data to an incr_parse consumer can exhaust process memory regardless of max_size.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.commetacpan.org
Oct 19, 2026Cpanel::JSON::XS versions from 4.28 before 4.80 for Perl leak the array collecting duplicate key values under dupkeys_as_arrayref in decode_hv.CVE-2026-110677 · Websites & servers · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441e
Cpanel::JSON::XS versions from 4.28 before 4.80 for Perl leak the array collecting duplicate key values under dupkeys_as_arrayref in decode_hv. With dupkeys_as_arrayref, the values of a duplicate object key are collected into a new array. An extra reference is never released, so the array and every value in it outlive the decoded structure. The array also leaks when decoding fails after a duplicate key. Repeatedly decoding untrusted JSON with a duplicate key holding a large value exhausts process memory.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.commetacpan.org
Oct 19, 2026Cpanel::JSON::XS versions before 4.80 for Perl allow memory exhaustion by encoding exponent notation as full decimal digits under allow_bignum.CVE-2026-110676 · Websites & servers · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441e
Cpanel::JSON::XS versions before 4.80 for Perl allow memory exhaustion by encoding exponent notation as full decimal digits under allow_bignum. With allow_bignum, a JSON number with a fraction or exponent decodes to a Math::BigFloat, which stores the exponent separately and so decodes cheaply. Encoding it untyped or as JSON_TYPE_FLOAT writes the plain decimal form with one digit per unit of exponent. Nothing bounds the exponent, so the 12-byte text [1e30000000] encodes to 30 MB. Untrusted JSON decoded with allow_bignum and encoded again can exhaust memory and CPU.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.commetacpan.org
Oct 19, 2026Cpanel::JSON::XS versions from 4.33 before 4.80 for Perl accept malformed UTF-8 in bare hash keys under allow_barekey in decode_hv.CVE-2026-110675 · Websites & servers · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441e
Cpanel::JSON::XS versions from 4.33 before 4.80 for Perl accept malformed UTF-8 in bare hash keys under allow_barekey in decode_hv. With utf8 and allow_barekey, which relaxed enables, a quoted key is validated as UTF-8 but a bare key's bytes are stored as a UTF-8 flagged string without any check. Malformed UTF-8, control bytes and backslashes reach the decoded hash, while malformed UTF-8 and control bytes in a quoted key or a value are rejected. Later operations on the key, including lc, uc or encoding the hash again, die with a malformed UTF-8 error.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.commetacpan.org
Oct 19, 2026Cpanel::JSON::XS versions from 4.33 before 4.80 for Perl miss duplicate non-ASCII bare keys, allowing type confusion under dupkeys_as_arrayref in decode_hv.CVE-2026-110674 · Websites & servers · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441e
Cpanel::JSON::XS versions from 4.33 before 4.80 for Perl miss duplicate non-ASCII bare keys, allowing type confusion under dupkeys_as_arrayref in decode_hv. With allow_barekey, which relaxed enables, a bare key containing a non-ASCII byte is stored as UTF-8 but looked up as raw bytes, so a repeated key escapes the duplicate-key check and replaces the earlier value. From 4.41, under dupkeys_as_arrayref, a bare repeat replaces the array that collects a key's values with a plain value, and the next quoted repeat pushes onto that value as if it were an array. A JSON integer there is dereferenced as a pointer. Untrusted JSON decoded with relaxed and dupkeys_as_arrayref can crash the process or dereference an address chosen by a JSON number.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.commetacpan.org
Oct 19, 2026Cpanel::JSON::XS versions before 4.80 for Perl allow stack exhaustion via nested tagged values under allow_tags in decode_tag.CVE-2026-110673 · Websites & servers · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441e
Cpanel::JSON::XS versions before 4.80 for Perl allow stack exhaustion via nested tagged values under allow_tags in decode_tag. With allow_tags, "(" starts a tagged value. Its tag and value are decoded recursively, and each can start another tagged value. Unlike arrays and objects, this nesting is not counted against max_depth. A run of "(" bytes exhausts the C stack and triggers an uncatchable segmentation fault regardless of max_depth.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.commetacpan.org
Oct 19, 2026Cpanel::JSON::XS versions before 4.80 for Perl leak the decoded key of an object rejected for a duplicate key or a missing colon in decode_hv.CVE-2026-110672 · Websites & servers · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441e
Cpanel::JSON::XS versions before 4.80 for Perl leak the decoded key of an object rejected for a duplicate key or a missing colon in decode_hv. A quoted key of 24 or more bytes, or one containing a non-ASCII byte or an escape sequence, is decoded into a new scalar. Nothing frees that scalar when the object is rejected for a missing ':' after the key or, from 4.09, for a duplicate key. Duplicate keys are an error unless allow_dupkeys, dupkeys_as_arrayref or relaxed is set. A process that keeps running after a failed decode retains one key per rejected document, with its size chosen by the sender. Repeated requests exhaust process memory.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.commetacpan.org
Oct 15, 2026AUTOM8N (WHM/cPanel plugin) through commit 82821f7 contains an OS Command Injection in borg_restore.cgi.CVE-2026-104586 · Other software · reported by MITRECritical 9.8
AUTOM8N (WHM/cPanel plugin) through commit 82821f7 contains an OS Command Injection in borg_restore.cgi.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 8, 2026Argument injection in WP Toolkit for cPanel allows local users to execute arbitrary code as other accounts on the same server.CVE-2026-93699 · Websites & servers · reported by support@hackerone.comHigh 8.5
Argument injection in WP Toolkit for cPanel allows local users to execute arbitrary code as other accounts on the same server.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 2, 2026Insufficient validation allows arbitrary commands to be executed via the Multilang adminbin.CVE-2026-93698 · Other software · Webpros · reported by support@hackerone.comCritical 9.9
Insufficient validation allows arbitrary commands to be executed via the Multilang adminbin.
- Product
- cPanel
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recorddocs.cpanel.netdocs.cpanel.net
Oct 2, 2026There is a stored XSS vulnerability allowing arbitrary code execution in the WHM Mass Modify Accounts interface.CVE-2026-93697 · Other software · Webpros · reported by support@hackerone.comCritical 9
There is a stored XSS vulnerability allowing arbitrary code execution in the WHM Mass Modify Accounts interface.
- Product
- cPanel
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recorddocs.cpanel.netdocs.cpanel.net
Oct 2, 2026There is a stored XSS vulnerability allowing arbitrary code execution in the WHM Manage SSL Hosts interface.CVE-2026-93029 · Other software · Webpros · reported by support@hackerone.comCritical 9
There is a stored XSS vulnerability allowing arbitrary code execution in the WHM Manage SSL Hosts interface.
- Product
- cPanel
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recorddocs.cpanel.netdocs.cpanel.net
Sep 23, 2026Argument injection in WP Toolkit for cPanel 6.11.2-10794 and earlier allows remote authenticated users to read arbitrary files and execute arbitrary code acrossCVE-2026-87900 · Websites & servers · reported by support@hackerone.comCritical 9.4
Argument injection in WP Toolkit for cPanel 6.11.2-10794 and earlier allows remote authenticated users to read arbitrary files and execute arbitrary code across customer accounts.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 23, 2026Execution with unnecessary privileges in cPanel allows remote authenticated users to execute arbitrary code with root privileges.CVE-2026-87899 · Websites & servers · reported by support@hackerone.comCritical 9.4
Execution with unnecessary privileges in cPanel allows remote authenticated users to execute arbitrary code with root privileges.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 23, 2026Incorrect permission assignment allows local users to obtain sensitive CalDAV/CardDAV information belonging to other accounts.CVE-2026-68490 · Other software · WebPros · reported by support@hackerone.comHigh 8.2
Incorrect permission assignment allows local users to obtain sensitive CalDAV/CardDAV information belonging to other accounts.
- Product
- cPanel
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 9, 2026A vulnerability in cPanel allows a mail-enabled account to achieve remote code execution as root through SQLi in EmailTrack componentCVE-2026-67401 · Websites & servers · reported by support@hackerone.comCritical 9.9
A vulnerability in cPanel allows a mail-enabled account to achieve remote code execution as root through SQLi in EmailTrack component
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 31, 2026Eval injection in cPanel 11.138.0.0 and earlier allows remote authenticated users to execute arbitrary code as root.CVE-2026-65643 · Websites & servers · reported by support@hackerone.comHigh 8.7
Eval injection in cPanel 11.138.0.0 and earlier allows remote authenticated users to execute arbitrary code as root.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 31, 2026Improper preservation of SQL mode when renaming databases in cPanel allows execution of SQL in root context.CVE-2026-58048 · Websites & servers · reported by support@hackerone.comCritical 9.4
Improper preservation of SQL mode when renaming databases in cPanel allows execution of SQL in root context.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recorddocs.cpanel.netsupport.cpanel.net
Jul 31, 2026HTTP Smuggling in cPanel allows potential leak of credentials.CVE-2026-58047 · Websites & servers · reported by support@hackerone.comMedium 5.6
HTTP Smuggling in cPanel allows potential leak of credentials.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recorddocs.cpanel.netsupport.cpanel.net
Jun 14, 2026LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following VulnerabilityCVE-2026-54420 · Other software · LiteSpeed · reported by MITREExploitedHigh 8.5
LiteSpeed cPanel plugin contains a UNIX symbolic link (Symlink) following vulnerability that could allow a user with FTP or web shell access on a shared hosting server running CloudLinux/CageFS.
- Product
- cPanel Plugin
- On CISA’s list since
- Jun 15, 2026 (federal fix deadline Jun 18, 2026)
- What to do
- Attackers are using this now. Install LiteSpeed’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD recordCISA catalogblog.litespeedtech.comlitespeedtech.com
Jun 12, 2026WordPress Toolkit before 6.11.0 as used in cPanel & WHM,: Argument injectionCVE-2026-47365 · WordPress plugins & themes · reported by support@hackerone.comCritical 9.9
Argument injection vulnerability in WordPress Toolkit before 6.11.0 as used in cPanel & WHM, allows remote authenticated users to bypass cross-tenant authorization and execute arbitrary wp-toolkit CLI commands as another account.
- Product
- WordPress Toolkit before 6.11.0 as used in cPanel & WHM,
- Fixed in
- 6.11.0
- What to do
- Update WordPress Toolkit before 6.11.0 as used in cPanel & WHM, to 6.11.0 or newer.
Jun 2, 2026Cpanel::JSON::XS versions before 4.41 for Perl allow denial of service via UTF-8 BOM prefixed input when a decode filter callback throws.CVE-2026-9516 · Websites & servers · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441eHigh 7.5
Cpanel::JSON::XS versions before 4.41 for Perl allow denial of service via UTF-8 BOM prefixed input when a decode filter callback throws. To skip a leading 3-byte UTF-8 BOM, decode_json() advances the input scalar's string pointer past the mark with SvPV_set() and restores it only on the normal return path. When decoding aborts through a Perl exception, for example a filter_json_object callback that croaks, the restore is skipped and the scalar is left with its string pointer offset into its own buffer and a shortened length. When that scalar is later freed, the allocator receives an invalid pointer and the interpreter aborts. A single BOM prefixed document decoded with a throwing filter callback crashes any caller.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.commetacpan.org
Jun 2, 2026Cpanel::JSON::XS versions before 4.41 for Perl allow type confusion via duplicate object keys when dupkeys_as_arrayref is enabled.CVE-2026-9334 · Websites & servers · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441eHigh 7.3
Cpanel::JSON::XS versions before 4.41 for Perl allow type confusion via duplicate object keys when dupkeys_as_arrayref is enabled. decode_hv() collapses duplicate object keys into an array reference under dupkeys_as_arrayref. The branch reached for a duplicate key tests `SvTYPE (old_value) != SVt_RV && SvTYPE (SvRV (old_value)) != SVt_PVAV`, which evaluates SvRV(old_value) before establishing that old_value is a reference. When the existing value is a plain scalar rather than an array reference, a non-reference scalar is dereferenced as a reference. A caller decoding untrusted JSON with dupkeys_as_arrayref enabled is crashed, and the incompatible access follows a pointer taken from attacker controlled scalar contents.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.commetacpan.org
May 20, 2026LiteSpeed cPanel Plugin Privilege Escalation VulnerabilityCVE-2026-48172 · Other software · LiteSpeed · reported by MITREExploitedCritical 10
LiteSpeed cPanel Plugin contains privilege escalation vulnerability that is exposed via the user-end cPanel plugin, which can be abused by any cPanel user account to execute arbitrary scripts with root privileges.
- Product
- cPanel Plugin
- On CISA’s list since
- May 26, 2026 (federal fix deadline May 29, 2026)
- What to do
- Attackers are using this now. Install LiteSpeed’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD recordCISA catalogblog.litespeedtech.comlitespeedtech.com
May 13, 2026Improper authorization checks of team members privileges allow a team member to escalate privileges to the team owner account.CVE-2026-32991 · Other software · WebPros · reported by support@hackerone.comHigh 7.1
Improper authorization checks of team members privileges allow a team member to escalate privileges to the team owner account.
- Product
- cPanel
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 13, 2026Insufficient sanitization of SQL queries in the `sqloptimizer` utility script allows SQL Injections on behalf of the root user if Slow Query logging is enabled.CVE-2026-29206 · Other software · WebPros · reported by support@hackerone.comHigh 8.1
Insufficient sanitization of SQL queries in the `sqloptimizer` utility script allows SQL Injections on behalf of the root user if Slow Query logging is enabled.
- Product
- cPanel
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 13, 2026Improper sanitization of the `status` query parameter of the `/unprotected/nova_error` endpoint allows unauthenticated attacker to inject arbitrary HTTP header CVE-2026-32993 · Other software · WebPros · reported by support@hackerone.comHigh 8.3
Improper sanitization of the `status` query parameter of the `/unprotected/nova_error` endpoint allows unauthenticated attacker to inject arbitrary HTTP header to the response.
- Product
- cPanel
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 13, 2026SSL verification is disabled in the DNS Cluster system.CVE-2026-32992 · Other software · WebPros · reported by support@hackerone.comHigh 8.2
SSL verification is disabled in the DNS Cluster system. This could allow for a malicious server to man-in-the-middle the request and capture credentials.
- Product
- cPanel
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 13, 2026Incorrect privileges management and insufficient path filtering allow to read arbitrary file on the server via the cpdavd attachment download endpoints.CVE-2026-29205 · Other software · WebPros · reported by support@hackerone.comHigh 8.6
Incorrect privileges management and insufficient path filtering allow to read arbitrary file on the server via the cpdavd attachment download endpoints.
- Product
- cPanel
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 8, 2026A chmod call in the cPanel Nova plugin's Cpanel::Nova::Connector follows symlinks, allowing setting root permissions on arbitrary system files or directories.CVE-2026-29203 · Websites & servers · reported by support@hackerone.comMedium 5.3
A chmod call in the cPanel Nova plugin's Cpanel::Nova::Connector follows symlinks, allowing setting root permissions on arbitrary system files or directories. That can cause DoS or local privilege escalation when an authenticated cPanel user places a symlink at a user-controlled legacy Nova path under their home directory.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 8, 2026Insufficient input validation of the `plugin` parameter of the `create_user` plugin allows arbitrary Perl code execution on behalf of the already authenticated CVE-2026-29202 · Other software · WebPros · reported by support@hackerone.comMedium 5.3
Insufficient input validation of the `plugin` parameter of the `create_user` plugin allows arbitrary Perl code execution on behalf of the already authenticated account's system user.
- Product
- cPanel
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 8, 2026Insufficient input validation of the feature file name in `feature::LOADFEATUREFILE` adminbin call can cause arbitrary file read when a relative file path is paCVE-2026-29201 · Other software · WebPros · reported by support@hackerone.comHigh 8.6
Insufficient input validation of the feature file name in `feature::LOADFEATUREFILE` adminbin call can cause arbitrary file read when a relative file path is passed.
- Product
- cPanel
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Apr 29, 2026WebPros cPanel & WHM and WP2 (WordPress Squared) Missing Authentication for Critical Function VulnerabilityCVE-2026-41940 · WordPress plugins & themes · reported by VulnCheckExploitedRansomwareCritical 9.3
WebPros cPanel & WHM (WebHost Manager) and WP2 (WordPress Squared) contain an authentication bypass vulnerability in the login flow that allows unauthenticated remote attackers to gain unauthorized access to the control panel.
- Product
- cPanel & WHM and WP2 (WordPress Squared)
- On CISA’s list since
- Apr 30, 2026 (federal fix deadline May 3, 2026)
- What to do
- Attackers are using this now. Install WebPros’s update today (ransomware groups use this one). If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD recordCISA catalogdocs.cpanel.netdocs.wpsquared.com
Dec 11, 2025An issue was discovered in cPanel 110 through 132.CVE-2025-66429 · Websites & servers · reported by MITREHigh 8.8
An issue was discovered in cPanel 110 through 132. A directory traversal vulnerability within the Team Manager API allows for overwrite of an arbitrary file. This can allow for privilege escalation to the root user.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recorddocs.cpanel.netdocs.cpanel.net
Sep 8, 2025Cpanel::JSON::XS before version 4.40 for Perl has an integer buffer overflow causing a segfault when parsing crafted JSON, enabling denial-of-service attacks orCVE-2025-40929 · Other software · RURBAN · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441eMedium 5.6
Cpanel::JSON::XS before version 4.40 for Perl has an integer buffer overflow causing a segfault when parsing crafted JSON, enabling denial-of-service attacks or other unspecified impact
- Product
- Cpanel::JSON::XS
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.commetacpan.org
Apr 19, 2025GNU Mailman 2.1.39, as bundled in cPanel (and WHM), allows unauthenticated attackers to create lists via the /mailman/create endpoint.CVE-2025-43921 · Other software · GNU · reported by MITREMedium 5.3
GNU Mailman 2.1.39, as bundled in cPanel (and WHM), allows unauthenticated attackers to create lists via the /mailman/create endpoint. NOTE: multiple third parties report that they are unable to reproduce this, regardless of whether cPanel or WHM is used.
- Product
- Mailman
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordcode.launchpad.netgithub.com
Apr 19, 2025GNU Mailman 2.1.39, as bundled in cPanel (and WHM), in certain external archiver configurations, allows unauthenticated attackers to execute arbitrary OS commanCVE-2025-43920 · Other software · GNU · reported by MITREMedium 5.4
GNU Mailman 2.1.39, as bundled in cPanel (and WHM), in certain external archiver configurations, allows unauthenticated attackers to execute arbitrary OS commands via shell metacharacters in an email Subject line. NOTE: multiple third parties report that they are unable to reproduce this, regardless of whether cPanel or WHM is used.
- Product
- Mailman
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordcode.launchpad.netgithub.com
Apr 19, 2025GNU Mailman 2.1.39, as bundled in cPanel (and WHM), allows unauthenticated attackers to read arbitrary files via ../ directory traversal at /mailman/private/maiCVE-2025-43919 · Other software · GNU · reported by MITREMedium 5.8
GNU Mailman 2.1.39, as bundled in cPanel (and WHM), allows unauthenticated attackers to read arbitrary files via ../ directory traversal at /mailman/private/mailman (aka the private archive authentication endpoint) via the username parameter. NOTE: multiple third parties report that they are unable to reproduce this, regardless of whether cPanel or WHM is used.
- Product
- Mailman
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordcode.launchpad.netgithub.com
Feb 27, 2025Arbitrary file overwrite during home directory recovery due to improper symbolic link handling.CVE-2025-24832 · Other software · Acronis · reported by security@acronis.comMedium 5.5
Arbitrary file overwrite during home directory recovery due to improper symbolic link handling. The following products are affected: Acronis Backup plugin for cPanel & WHM (Linux) before build 1.8.4.866, Acronis Backup plugin for cPanel & WHM (Linux) before build 1.9.1.892, Acronis Backup extension for Plesk (Linux) before build 1.8.7.615.
- Product
- Acronis Backup plugin for cPanel & WHM
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecurity-advisory.acronis.com
Feb 3, 2025DigiTimber cPanel Integration: Cross-Site Request Forgery (CSRF)CVE-2025-22690 · WordPress plugins & themes · reported by PatchstackHigh 7.1
Cross-Site Request Forgery (CSRF) vulnerability in DigiTimber DigiTimber cPanel Integration digitimber-cpanel-integration allows Stored XSS.This issue affects DigiTimber cPanel Integration: from n/a through <= 1.4.6.
- Product
- DigiTimber cPanel Integration
- Affected
- up to 1.4.6
- What to do
- Affects up to 1.4.6. Update DigiTimber cPanel Integration to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Nov 11, 2024Sensitive information disclosure during file browsing due to improper symbolic link handling.CVE-2024-34015 · Other software · Acronis · reported by security@acronis.comLow 3.3
Sensitive information disclosure during file browsing due to improper symbolic link handling. The following products are affected: Acronis Backup plugin for cPanel & WHM (Linux) before build 1.8.3.818, Acronis Backup plugin for cPanel & WHM (Linux) before build 1.9.1.892.
- Product
- Acronis Backup plugin for cPanel & WHM
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecurity-advisory.acronis.com
Nov 11, 2024Arbitrary file overwrite during recovery due to improper symbolic link handling.CVE-2024-34014 · Other software · Acronis · reported by security@acronis.comMedium 5.5
Arbitrary file overwrite during recovery due to improper symbolic link handling. The following products are affected: Acronis Backup plugin for cPanel & WHM (Linux) before build 1.8.3.818, Acronis Backup plugin for cPanel & WHM (Linux) before build 1.9.1.892, Acronis Backup extension for Plesk (Linux) before build 1.8.6.599, Acronis Backup plugin for DirectAdmin (Linux) before build 1.2.2.181.
- Product
- Acronis Backup plugin for cPanel & WHM
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecurity-advisory.acronis.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.
Weekly security brief
The flaws that hit local websites, every Friday.
One short email: what got exploited this week, which WordPress plugins broke, and what to check. Unsubscribe in one click.
Tell us what you're building.
A website, your marketing, a security check, an app, or the thing you've been running out of a spreadsheet for three years. A few lines is plenty.
Not ready to talk yet? Run the free website check and see what Google sees.