CVE-2025-3230

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.

Score

CVSS 3.1 5.4 Medium

Status

Analyzed - responsibledisclosure@mattermost.com

Published

2025-05-30

Last modified

2025-05-30

Weaknesses

CWE-303

Affected products

• Mattermost (Mattermost)
• Mattermost Server (Mattermost)

References

• https://mattermost.com/security-updates