CVE Feed

    Dashboard / CVE / CVE-2026-67335

    CVE-2026-67335

    better-auth versions before 1.6.2 fail to validate the OAuth state parameter against the stored nonce when using cookie-backed state storage without PKCE. Attackers can forge the state parameter and supply an attacker-controlled authorization code to create authenticated sessions bound to the attacker's external identity or persistently link attacker accounts to victim profiles.

    Published:Aug 1, 2026
    Last Modified:Aug 3, 2026
    EPS:Aug 1, 2026
    EPSS Score:0.00172
    CVSS Score:5.3

    Affected Products

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

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-287 Improper Authentication

    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