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CVE-2026-2454
5.8 MEDIUM
- CVSS version: 3.1
- Attack vector (AV): NETWORK
- Attack complexity (AC): LOW
- Privileges required (PR): NONE
- User interaction (UI): NONE
- Scope (S): CHANGED
- Confidentiality impact (C): NONE
- Integrity impact (I): NONE
- Availability impact (A): LOW
DoS in Calls plugin via malformed msgpack in websocket request.
Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to handle incorrectly reported array lengths which allows malicious user to cause OOM errors and crash the server via sending corrupted msgpack frames within websocket messages to calls plugin. Mattermost Advisory ID: MMSA-2025-00537
References
- MMSA-2025-00537 vendor-advisory
Affected products
Mattermost
- =<11.2.2
- ==11.3.1
- ==10.11.11
- =<10.11.10
- ==11.2.3
- =<11.3.0
- ==11.4.0
Matching in nixpkgs
pkgs.mattermost
Mattermost is an open source platform for secure collaboration across the entire software development lifecycle
pkgs.mattermostLatest
Mattermost is an open source platform for secure collaboration across the entire software development lifecycle
pkgs.mattermost-desktop
Mattermost Desktop client
pkgs.python312Packages.mattermostdriver
Python Mattermost Driver
pkgs.python313Packages.mattermostdriver
Python Mattermost Driver
pkgs.python314Packages.mattermostdriver
Python Mattermost Driver
Package maintainers
-
@fsagbuya Florian Agbuya <fa@m-labs.ph>
-
@Kranzes Ilan Joselevich <personal@ilanjoselevich.com>
-
@ryantm Ryan Mulligan <ryan@ryantm.com>
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@numinit Morgan Jones <me+nixpkgs@numin.it>
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@mgdelacroix Miguel de la Cruz <mgdelacroix@gmail.com>
-
@liff Olli Helenius <liff@iki.fi>
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@jokogr Ioannis Koutras <ioannis.koutras@gmail.com>
-
@globin Robin Gloster <mail@glob.in>