Origin Validation Error

Overview github.com/mattermost/mattermost/server/channels/app is a private-cloud Slack alternative Affected versions of this package are vulnerable to Origin Validation Error via the post update API endpoint when client-supplied post metadata is not properly sanitized. An attacker can impersonate...

CVE-2026-4265

Mattermost versions 11.3.x = 11.3.0, 11.2.x = 11.2.2, 10.11.x = 10.11.10 fail to validate team-specific uploadfile permissions which allows a guest user to post files in channels where they lack uploadfile permission via uploading files in a team where they have permission and reusing the file...

CVE-2026-2457

Mattermost versions 11.3.x = 11.3.0, 11.2.x = 11.2.2, 10.11.x = 10.11.10 fail to sanitize client-supplied post metadata which allows an authenticated attacker to spoof permalink embeds impersonating other users via crafted PUT requests to the post update API endpoint.. Mattermost Advisory ID:...

CVE-2026-32775

libexif through 0.6.25 has a flaw in decoding MakerNotes. If the exifmnotedatagetvalue function gets passed in a 0 size, the passed in-buffer would be overwritten due to an integer underflow...

CVE-2026-4265

Mattermost versions 11.3.x = 11.3.0, 11.2.x = 11.2.2, 10.11.x = 10.11.10 fail to validate team-specific uploadfile permissions which allows a guest user to post files in channels where they lack uploadfile permission via uploading files in a team where they have permission and reusing the file...

CVE-2026-4265 Guest user can upload files without permission across teams

Mattermost versions 11.3.x = 11.3.0, 11.2.x = 11.2.2, 10.11.x = 10.11.10 fail to validate team-specific uploadfile permissions which allows a guest user to post files in channels where they lack uploadfile permission via uploading files in a team where they have permission and reusing the file...

CVE-2026-2457 WebSocket Message Spoofing via Permalink Embed Manipulation

Mattermost versions 11.3.x = 11.3.0, 11.2.x = 11.2.2, 10.11.x = 10.11.10 fail to sanitize client-supplied post metadata which allows an authenticated attacker to spoof permalink embeds impersonating other users via crafted PUT requests to the post update API endpoint.. Mattermost Advisory ID:...

CVE-2026-2457 WebSocket Message Spoofing via Permalink Embed Manipulation

Mattermost versions 11.3.x = 11.3.0, 11.2.x = 11.2.2, 10.11.x = 10.11.10 fail to sanitize client-supplied post metadata which allows an authenticated attacker to spoof permalink embeds impersonating other users via crafted PUT requests to the post update API endpoint.. Mattermost Advisory ID:...

CVE-2026-32775

libexif through 0.6.25 has a flaw in decoding MakerNotes. If the exifmnotedatagetvalue function gets passed in a 0 size, the passed in-buffer would be overwritten due to an integer underflow...

PT-2026-25775

Name of the Vulnerable Software and Affected Versions FastMCP versions prior to 2.14.2 Description FastMCP, a framework for building MCP applications, does not properly validate the resource parameter submitted by the client during authorization and token requests. Instead of issuing tokens...

Admidio Vulnerable to SSRF and Local File Read via Unrestricted URL Fetch in SSO Metadata Endpoint

The SSO metadata fetch endpoint at modules/sso/fetchmetadata.php accepts an arbitrary URL via $GET'url', validates it only with PHP's FILTERVALIDATEURL, and passes it directly to filegetcontents. FILTERVALIDATEURL accepts file://, http://, ftp://, data://, and php:// scheme URIs. An authenticated...

PT-2026-25864

Name of the Vulnerable Software and Affected Versions Admidio versions 5.0.0 through 5.0.6 Description Admidio, an open-source user management solution, contains a flaw in the SSO Metadata API. The modules/sso/fetch metadata.php endpoint accepts an arbitrary URL via the $ GET'url' parameter. This...

OESA-2026-1564 exiv2 security update

Exiv2 is a Cross-platform C++ library and a command line utility to manage image metadata. It provides fast and easy read and write access to the Exif, IPTC and XMP metadata and the ICC Profile embedded within digital images in various formats. Security Fixes: An out-of-bounds read was found in...

OESA-2026-1568 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved: mm/slub: avoid accessing metadata when pointer is invalid in objecterr objecterr reports details of an object for further debugging, such as the freelist pointer...

Unity Linux 20.1070e Security Update: exiv2 (UTSA-2026-006187)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-006187 advisory. Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and ICC image metadata. An out-of-bounds read was found in Exiv2...

EUVD-2026-12009

Improper Neutralization of Input During Web Page Generation 'Cross-site Scripting' vulnerability in RealMag777 MDTF wp-meta-data-filter-and-taxonomy-filter allows DOM-Based XSS.This issue affects MDTF: from n/a through = 1.3.5...

EUVD-2026-12176

AnythingLLM is an application that turns pieces of content into context that any LLM can use as references during chatting. In 1.11.1 and earlier, in multi-user mode, AnythingLLM blocks suspended users on the normal JWT-backed session path, but it does not block them on the browser extension API...

CVE-2026-32717

AnythingLLM prior to 1.11.2 in multi-user mode suffers an access control bypass where suspended users remain authenticated via browser extension API keys. If a user already has a valid brx-... browser extension API key, it continues to work after suspension, allowing access to browser extension e...

CVE-2026-32717

AnythingLLM is an application that turns pieces of content into context that any LLM can use as references during chatting. In 1.11.1 and earlier, in multi-user mode, AnythingLLM blocks suspended users on the normal JWT-backed session path, but it does not block them on the browser extension API...

CVE-2026-32717 AnythingLLM access control bypass: suspended users can continue using Browser Extension API keys

AnythingLLM is an application that turns pieces of content into context that any LLM can use as references during chatting. In 1.11.1 and earlier, in multi-user mode, AnythingLLM blocks suspended users on the normal JWT-backed session path, but it does not block them on the browser extension API...