Skip to content
OpenAdvisories
Medium · 5.5 CVE-2026-7521 EUVD-2026-49852GHSA-rxgw-2f9c-c2hh

SAML certificate deletion allows path traversal to delete arbitrary files outside the config directory

Published Jul 28, 2026 · Updated Jul 28, 2026 · Assigned by Mattermost

Vendor: Mattermost Product: Mattermost

Description

Mattermost versions 11.8.x <= 11.8.0, 11.7.x <= 11.7.3, 11.6.x <= 11.6.5, 10.11.x <= 10.11.20 fail to verify file deletion path which allows an admin with SAML system-console write permissions to delete arbitrary files outside the config directory from the server via the remove file endpoint.. Mattermost Advisory ID: MMSA-2026-00666

Affected products

VendorProductAffectedFixed
Mattermost Mattermost 11.8.0 – ≤ 11.8.0, 11.7.0 – ≤ 11.7.3, 11.6.0 – ≤ 11.6.5, 10.11.0 – ≤ 10.11.20 11.9.0

References