CVE-2026-28741 – CSRF Protection Bypass Allows Updating a User’s Authentication Method

CVE ID :CVE-2026-28741

Published : April 15, 2026, 10:13 a.m. | 1 hour, 44 minutes ago

Description :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
Severity: 6.8 | MEDIUM

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