Security Advisory

CVE-2026-4858

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-05-21 08:12:11
Last updated 2026-05-22 03:55:26
Assigner Mattermost
CVSS score 8.0
State PUBLISHED

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