CVEvulnerability

CVE-2025-12689

6.5 MEDIUM Published 2025-12-17 Modified 2026-10-13 Official page ↗
Status
Analyzed
Published
2025-12-17
Last modified
2026-10-13
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-1287

Description

Mattermost versions 11.0.x <= 11.0.4, 10.12.x <= 10.12.2, 10.11.x <= 10.11.6 fail to check WebSocket request field for proper UTF-8 format, which allows attacker to crash Calls plug-in via sending malformed request.

Affected configurations

• mattermost mattermost server (>= 10.11.0 < 10.11.7) • mattermost mattermost server (>= 10.12.0 < 10.12.3) • mattermost mattermost server (>= 11.0.0 < 11.0.5)

Related

Weakness · CWE (1)

  • CWE-1287 Improper Validation of Specified Type of Input weakness

References