CVE-2025-55074

Summary

Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11 fail to enforce access permissions on the Agents plugin which allows other users to determine when users had read channels via channel member objects

Affected Software

VendorProductVersion RangeStatus
MattermostMattermost10.11.0 <= 10.11.3affected
MattermostMattermost10.5.0 <= 10.5.11affected
MattermostMattermost11.0.0unaffected
MattermostMattermost10.11.4unaffected
MattermostMattermost10.5.12unaffected

Weaknesses

  • CWE-1426: CWE-1426: Improper Validation of Generative AI Output

ADP Enrichment

CISA ADP Vulnrichment

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

References