CVE-2025-71400

Summary

better-auth passkey versions before 1.4.0 contain an insecure direct object reference vulnerability in the passkey deletion endpoint that allows authenticated users to delete arbitrary passkeys by ID. Attackers with valid sessions can submit crafted requests to the delete-passkey endpoint with enumerated passkey IDs to remove other users' passkeys.

Affected Software

VendorProductVersion RangeStatus
better-authpasskey0 < 1.4.0affected
better-authpasskey1.4.0unaffected

Weaknesses

  • CWE-639: Authorization Bypass Through User-Controlled Key

References