CVE-2026-86348

Mattermost versions =11.9 11.0.9 11.4.8 11.7.7 10.22.11.0 fail to recover from handler panics, which allows an authenticated user to crash the plugin via a post-action request with an unexpected field type.. Mattermost Advisory ID: MMSA-2026-00701...

EUVD-2026-77481

Mattermost versions =11.9 11.0.9 11.4.8 11.7.7 10.22.11.0 fail to recover from handler panics, which allows an authenticated user to crash the plugin via a post-action request with an unexpected field type.. Mattermost Advisory ID: MMSA-2026-00701...

CVE-2026-86348

CVE-2026-86348 affects the MS Calendar plugin for Mattermost (versions ≤11.9, 11.0.9, 11.4.8, 11.7.7, and 10.22.11.0). The plugin fails to recover from handler panics triggered by a post-action request containing an unexpected field type , allowing an authenticated user to crash the plugin proces...

CVE-2026-10556

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 validate null entries in Microsoft Graph webhook notification payloads, which allows an unauthenticated attacker to crash the Microsoft Calendar plugin process and deny calendar integration service t...

PT-2026-91238

Mattermost versions =11.9 11.0.9 11.4.8 11.7.7 10.22.11.0 fail to recover from handler panics, which allows an authenticated user to crash the plugin via a post-action request with an unexpected field type.. Mattermost Advisory ID: MMSA-2026-00701...

EUVD-2026-60539

Mattermost versions 11.7.x = 11.7.6, 10.11.x = 10.11.21, 11.8.x = 11.8.3 fails to validate WebSocket command field types which allows an authenticated user to crash the plugin process and deny service to all Boards users via a customfocalboardSUBSCRIBETEAM message with a non-string teamId...

CVE-2026-10080

Mattermost versions 11.7.x = 11.7.6, 10.11.x = 10.11.21, 11.8.x = 11.8.3 fails to validate WebSocket command field types which allows an authenticated user to crash the plugin process and deny service to all Boards users via a customfocalboardSUBSCRIBETEAM message with a non-string teamId...

PT-2026-76867

Mattermost versions 11.7.x = 11.7.6, 10.11.x = 10.11.21, 11.8.x = 11.8.3 fails to validate WebSocket command field types which allows an authenticated user to crash the plugin process and deny service to all Boards users via a custom focalboard SUBSCRIBE TEAM message with a non-string teamId...

EUVD-2026-50228

The Apache Traffic Server prefetch plugin can crash when processing attacker-influenced input. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the iss...

CVE-2026-58183

The CVE-2026-58183 issue affects Apache Traffic Server’s prefetch plugin, which can crash when handling attacker-influenced input. Affected versions are 8.0.0–8.1.9, 9.0.0–9.2.14, and 10.0.0–10.1.3. Remediation is to upgrade to 9.2.15 or 10.1.4, which fix the issue. No exploitation details are pr...

CVE-2026-58181 Apache Traffic Server: uri_signing and url_sig plugins can exhaust the stack or crash

The Apache Traffic Server urisigning and urlsig plugins can exhaust the stack or crash on attacker input. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which...

EUVD-2026-50226

The Apache Traffic Server urisigning and urlsig plugins can exhaust the stack or crash on attacker input. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which...

CVE-2026-57246

When dealing with abnormally constructed objects, there is a lack of argument validation; JavaScript triggers signature verification, but the signature plugin does not perform validation when copying the abnormal string, causing the application to crash...

CVE-2026-11611 389-ds-base: 389-ds-base: content sync plugin unbounded queue growth and race conditions

A flaw was found in 389 Directory Server. The Content Synchronization persistent search plugin allows unbounded memory growth when an authenticated client stops reading sync responses, enabling denial of service. Additional race conditions in plugin thread lifecycle can cause crashes during...

GHSA-RMVV-8V8W-RF7X Mattermost doesn't validate user-supplied input in API request handlers

Mattermost versions 11.6.x = 11.6.0, 11.5.x = 11.5.3, 11.4.x = 11.4.4, 10.11.x = 10.11.14 fail to validate user-supplied input in API request handlers which allows an authenticated attacker to crash the plugin process via a crafted HTTP request to the PR details endpoint. Mattermost Advisory ID:...

Improper Validation of Specified Type of Input

Overview Affected versions of this package are vulnerable to Improper Validation of Specified Type of Input in the API request handlers due to insufficient validation of user-supplied input. An attacker can cause the plugin process to crash by sending a specially crafted HTTP request to the PR...

CVE-2026-4646

Mattermost versions 11.6.x = 11.6.0, 11.5.x = 11.5.3, 11.4.x = 11.4.4, 10.11.x = 10.11.14 fail to validate user-supplied input in API request handlers which allows an authenticated attacker to crash the plugin process via a crafted HTTP request to the PR details endpoint.. Mattermost Advisory ID:...

EUVD-2026-31430

Mattermost versions 11.6.x = 11.6.0, 11.5.x = 11.5.3, 11.4.x = 11.4.4, 10.11.x = 10.11.14 fail to validate user-supplied input in API request handlers which allows an authenticated attacker to crash the plugin process via a crafted HTTP request to the PR details endpoint.. Mattermost Advisory ID:...

CVE-2026-40919

A flaw was found in GIMP. This vulnerability, a buffer overflow in the file-seattle-filmworks plugin, can be exploited when a user opens a specially crafted Seattle Filmworks file. A remote attacker could leverage this to cause a denial of service DoS, leading to the plugin crashing and potential...

CVE-2026-40919

A flaw was found in GIMP. This vulnerability, a buffer overflow in the file-seattle-filmworks plugin, can be exploited when a user opens a specially crafted Seattle Filmworks file. A remote attacker could leverage this to cause a denial of service DoS, leading to the plugin crashing and potential...