← Database

CVE-2026-4858

HIGH CVSS: 8.0 Published: 2026-05-21 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 check integration URL for path traversal which allows an malicious authenticated user to call an arbitrary API via system admin Mattermost auth token using via path traversal in integration action URL.. Mattermost Advisory ID: MMSA-2026-00640

Affected Platforms

Mattermost Mattermost Server

Weakness Type

CWE-22

References