CVE Database
/

CVE-2026-28741

Back to search

CVE-2026-28741

Published: Apr 15, 2026

Modified: Apr 15, 2026

PUBLISHED

CVSS v3.1

6.8

MEDIUM

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

VendorProductVersions

Mattermost

Mattermost

affected
10.11.0 - <= 10.11.12
affected
11.5.0 - <= 11.5.0
affected
11.4.0 - <= 11.4.2
affected
11.3.0 - <= 11.3.2
unaffected
10.11.13

+3 more versions

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

References

MMSA-2026-00625
vendor-advisory

Security Training

Train your team to recognize and prevent security threats with our comprehensive security awareness program.

Start Training

Vulnerability Scanning

Discover vulnerabilities in your applications and infrastructure before attackers do.

Scan Now