CVE-2024-29977

Summary

Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6 fail to properly validate synced reactions, when shared channels are enabled, which allows a malicious remote to create arbitrary reactions on arbitrary posts

Affected Software

VendorProductVersion RangeStatus
MattermostMattermost9.9.0affected
MattermostMattermost9.5.0 <= 9.5.6affected
MattermostMattermost9.10.0unaffected
MattermostMattermost9.9.1unaffected
MattermostMattermost9.5.7unaffected

Weaknesses

  • CWE-284: CWE-284: Improper Access Control

ADP Enrichment

CISA ADP Vulnrichment

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

References