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CVE PROGRAM SOURCE RECORD5.5 Medium

CVE-2026-7521

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

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

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Mattermost Mattermost

Default version status: unaffected

  • 11.8.0 to ≤ 11.8.0affected
  • 11.7.0 to ≤ 11.7.3affected
  • 11.6.0 to ≤ 11.6.5affected
  • 10.11.0 to ≤ 10.11.20affected
  • 11.9.0unaffected
  • 11.8.1unaffected
  • 11.7.4unaffected
  • 11.6.6unaffected
  • 10.11.21unaffected

References