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CVE-2026-4273
3.7 LOW
- CVSS version (CVSS): 3.1
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): High (H)
- Privileges Required (PR): None (N)
- User Interaction (UI): None (N)
- Scope (S): Unchanged (U)
- Confidentiality (C): None (N)
- Integrity (I): Low (L)
- Availability (A): None (N)
- Modified Attack Vector (MAV): Network (N)
- Modified Attack Complexity (MAC): High (H)
- Modified Privileges Required (MPR): None (N)
- Modified User Interaction (MUI): None (N)
- Modified Confidentiality (MC): None (N)
- Modified Scope (MS): Unchanged (U)
- Modified Integrity (MI): Low (L)
- Modified Availability (MA): None (N)
Activity log
- Created suggestion
Insufficient token rotation validation in remote cluster invite confirmation
Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13 fail to validate that the RefreshedToken differs from the original invite token during remote cluster invite confirmation which allows an authenticated attacker to bypass token rotation and reuse the original invite token via sending a crafted invite confirmation with a RefreshedToken matching the original token. Mattermost Advisory ID: MMSA-2026-00575
References
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MMSA-2026-00575 vendor-advisory
Affected products
Mattermost
- ==11.6.0
- ==10.11.14
- =<10.11.13
- =<11.5.1
- ==11.5.2
Matching in nixpkgs
pkgs.mattermost
Open source platform for secure collaboration across the entire software development lifecycle
pkgs.mattermostLatest
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
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@numinit Morgan Jones <me+nixpkgs@numin.it>
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@Kranzes Ilan Joselevich <personal@ilanjoselevich.com>
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@mgdelacroix Miguel de la Cruz <mgdelacroix@gmail.com>
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@ryantm Ryan Mulligan <ryan@ryantm.com>
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@jokogr Ioannis Koutras <ioannis.koutras@gmail.com>
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@yayayayaka Yaya <github@uwu.is>
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@liff Olli Helenius <liff@iki.fi>
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@globin Robin Gloster <mail@glob.in>