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CVE-2026-3116
4.9 MEDIUM
- CVSS version: 3.1
- Attack vector (AV): NETWORK
- Attack complexity (AC): LOW
- Privileges required (PR): HIGH
- User interaction (UI): NONE
- Scope (S): UNCHANGED
- Confidentiality impact (C): NONE
- Integrity impact (I): NONE
- Availability impact (A): HIGH
Improper Input Validation in Zoom Plugin Webhook Handler
Mattermost Plugins versions <=11.4 11.0.4 11.1.3 11.3.2 10.11.11.0 fail to validate incoming request size which allows an authenticated attacker to cause service disruption via the webhook endpoint. Mattermost Advisory ID: MMSA-2026-00589
References
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MMSA-2026-00589 vendor-advisory
Affected products
Mattermost
- =<11.3.2
- =<11.0.4
- =<10.11.11
- ==11.5.0
- =<11.1.3
- ==11.4.1
- ==10.11.12
- ==11.2.4
- ==11.3.2
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>
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@Kranzes Ilan Joselevich <personal@ilanjoselevich.com>
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@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>
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@liff Olli Helenius <liff@iki.fi>
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@jokogr Ioannis Koutras <ioannis.koutras@gmail.com>
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@globin Robin Gloster <mail@glob.in>