CVE-2026-7521
SAML certificate deletion allows path traversal to delete arbitrary files outside the config directory
CVSS Score
5.5
EPSS Score
0.0%
EPSS Percentile
0th
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
| CWE | CWE-22 |
| Vendor | mattermost |
| Product | mattermost |
| Published | Jul 28, 2026 |
| Last Updated | Jul 28, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
High
Affected Versions
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
Credits
winfunc