CVE-2025-47871

Summary

Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to properly validate channel membership when retrieving playbook run metadata, allowing authenticated users who are playbook members but not channel members to access sensitive information about linked private channels including channel name, display name, and participant count through the run metadata API endpoint.

Affected Software

VendorProductVersion RangeStatus
MattermostMattermost10.5.0 <= 10.5.5affected
MattermostMattermost9.11.0 <= 9.11.15affected
MattermostMattermost10.8.0affected
MattermostMattermost10.7.0 <= 10.7.2affected
MattermostMattermost10.6.0 <= 10.6.5affected
MattermostMattermost10.9.0unaffected
MattermostMattermost10.5.6unaffected
MattermostMattermost9.11.16unaffected
MattermostMattermost10.8.1unaffected
MattermostMattermost10.7.3unaffected
MattermostMattermost10.6.6unaffected

Weaknesses

  • CWE-863: CWE-863: Incorrect Authorization

ADP Enrichment

CISA ADP Vulnrichment

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

References