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    CVE-2025-71400

    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.

    Published:Aug 2, 2026
    Last Modified:Aug 3, 2026
    EPS:Aug 2, 2026
    EPSS Score:0.00202
    CVSS Score:7.1

    Affected Products

    Vendor
    Better-auth
    Product
    Better-auth/oauth-provider
    Vendor
    Better-auth
    Product
    Better-auth\/oauth-provider
    Vendor
    Better-auth
    Product
    Passkey

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High