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Missing Authentication for Critical Function

CVE-2025-27538

Low
2.7/10

Summary

Mattermost versions 9.11.x through 9.11.9, 10.5.x through 10.5.1 fails to enforce MFA checks in PUT "/api/v4/users/user-id/mfa" when the requesting user differs from the target user ID, which allows users with "edit_other_users" permission to activate or deactivate MFA for other users, even if those users have not set up MFA.

  • LOW
  • NETWORK
  • LOW
  • UNCHANGED
  • NONE
  • HIGH
  • NONE
  • NONE

CWE-306 - Missing Authentication for Critical Function

The software does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

References

Advisory Timeline

  • Published