← Database

CVE-2026-4646

MEDIUM CVSS: 4.3 Published: 2026-05-22 Modified: 2026-07-23

Description

Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to validate user-supplied input in API request handlers which allows an authenticated attacker to crash the plugin process via a crafted HTTP request to the PR details endpoint.. Mattermost Advisory ID: MMSA-2026-00638

Affected Platforms

Mattermost Mattermost Server

Weakness Type

CWE-1287

References