Mattermost versions 10.11.x <= 10.11.12, 11.5.x <= 11.5.0, 11.4.x <= 11.4.2, 11.3.x <= 11.3.2 fail to validate CSRF tokens on an authentication endpoint which allows an attacker to update a user's authentication method via a CSRF attack by tricking a user into visiting a malicious page. Mattermost Advisory ID: MMSA-2026-00625
| Vendor | Product | Versions |
|---|---|---|
| mattermost | mattermost | 10.11.0, 11.5.0, 11.4.0, 11.3.0 |
Updated exploit availability to false, marked as actively exploited, and set patch available to null.
Initial creation
