CVE-2026-28741CWE-352

CSRF Protection Bypass Allows Updating a User's Authentication Method

Medium · published April 15, 2026

CVSS v3.1
6.8
EPSS
0%
Percentile
6.7
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
6.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00176 · 6.7th percentile
Weakness
CWE-352 · Cross-Site Request Forgery (CSRF)
Published
2026-04-15T10:13Z
EPSS history
Timeline
  • 15 APR 10:13Z
    CSRF Protection Bypass Allows Updating a User's Authentication Method
    cvelistv5