CVE-2026-7521 — SAML certificate deletion allows path traversal to delete arbitrary files outside the config directory

CVE-2026-7521

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

Description (CNA)

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 (CNA)

Vendor / product	Versions
Mattermost / Mattermost	affected 11.8.0 through 11.8.0; affected 11.7.0 through 11.7.3; affected 11.6.0 through 11.6.5; affected 10.11.0 through 10.11.20; unaffected 11.9.0; unaffected 11.8.1; unaffected 11.7.4; unaffected 11.6.6; unaffected 10.11.21

CWE

CWE-22

References

https://mattermost.com/security-updates

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.