CVE-2026-7521CWE-22

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

Medium · published July 28, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
37.1
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H
CVSS v4.0
Not supplied
EPSS
0.00439 · 37.1th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2026-07-28T13:58Z
EPSS history
Timeline
  • 28 JUL 13:58Z
    SAML certificate deletion allows path traversal to delete arbitrary files outside the config directory
    cvelistv5