CVE-2026-7521

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

State: Published
Severity: 5.5 Medium
Published: Jul 28, 2026
Updated: Jul 28, 2026
Reserved: Apr 30, 2026

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

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H	Mattermost

Weaknesses

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Affected Products

Product	Versions
MattermostMattermost	11.8.0 through 11.8.0Affected 11.7.0 through 11.7.3Affected 11.6.0 through 11.6.5Affected 10.11.0 through 10.11.20Affected 11.9.0Not affected 11.8.1Not affected 11.7.4Not affected 11.6.6Not affected 10.11.21Not affected

References

MMSA-2026-00666vendor-advisory

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