CVE-2025-3230

Bypass of System Admin User Deactivation Controls for Personal Access Tokens in Mattermost Server

Published May 30, 2025 CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed
Description
Mattermost versions 10.7.x <= 10.7.0, 10.6.x <= 10.6.2, 10.5.x <= 10.5.3, 9.11.x <= 9.11.12 fails to properly invalidate personal access tokens upon user deactivation, allowing deactivated users to maintain full system access by exploiting access token validation flaws via continued usage of previously issued tokens.

Remediation

Vendor Solution

Update Mattermost to versions 10.8.0, 10.7.1, 10.6.3, 10.5.4, 9.11.13 or higher.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-16491 Mattermost fails to properly invalidate personal access tokens upon user deactivation
Github GHSA Github GHSA GHSA-mc2f-jgj6-6cp3 Mattermost fails to properly invalidate personal access tokens upon user deactivation
References
History
Type Values Removed Values Added
First Time appeared Mattermost mattermost Server
CPEs cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
Vendors & Products Mattermost mattermost Server
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Mattermost versions 10.7.x <= 10.7.0, 10.6.x <= 10.6.2, 10.5.x <= 10.5.3, 9.11.x <= 9.11.12 fails to properly invalidate personal access tokens upon user deactivation, allowing deactivated users to maintain full system access by exploiting access token validation flaws via continued usage of previously issued tokens.
Title Bypass of System Admin User Deactivation Controls for Personal Access Tokens in Mattermost Server
Weaknesses CWE-303
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Mattermost
Published
Updated
May 30, 2025, 2:42 PM
Reserved
Apr 3, 2025, 3:46 PM
Status
Analyzed
Published
May 30, 2025, 3:15 PM
Modified
Jun 17, 2026, 9:19 AM