CVE-2025-41443

Summary

Mattermost versions 10.5.x <= 10.5.12, 10.11.x <= 10.11.2 fail to properly validate guest user permissions when accessing channel information which allows guest users to discover active public channels and their metadata via the /api/v4/teams/{team_id}/channels/ids endpoint

Affected Software

VendorProductVersion RangeStatus
MattermostMattermost10.5.0 <= 10.5.12affected
MattermostMattermost10.11.0 <= 10.11.2affected
MattermostMattermost10.12.0unaffected
MattermostMattermost10.5.13unaffected
MattermostMattermost10.11.3unaffected

Weaknesses

  • CWE-862: CWE-862: Missing Authorization

ADP Enrichment

CISA ADP Vulnrichment

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

References