CVE-2026-28741HIGH 8.1EPSS p2.9%

CVE-2026-28741CVE-2026-28741

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

Scoring

CVSS 3.18.1 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
EPSS0.13% probability of exploitation · percentile 2.9% · 2026-06-19T12:03:05Z
Published2026-04-15
Last modified2026-04-22

Underlying weaknesses· 1

CWE-352

References

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

1

TypeTargetConfidenceTier
WeaknessCross-Site Request Forgery (CSRF)cwe-3520%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
CVE-2026-3116
CVE
CVE-2026-6346
CVE
CVE-2025-14273
CVE
CVE-2026-3109
CVE
CVE-2026-4858
CVE
CVE-2025-25068
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.