CVE-2025-9081

Summary

Mattermost versions 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate access controls which allows any authenticated user to download sensitive files via board file download endpoint using UUID enumeration

Affected Software

VendorProductVersion RangeStatus
MattermostMattermost10.5.0 <= 10.5.8affected
MattermostMattermost9.11.0 <= 9.11.17affected
MattermostMattermost10.11.0unaffected
MattermostMattermost10.5.9unaffected
MattermostMattermost9.11.18unaffected

Weaknesses

  • CWE-639: CWE-639: Authorization Bypass Through User-Controlled Key

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References