CVE-2026-67337

better-auth versions before 1.4.9 contain a two-factor authentication bypass vulnerability when session.cookieCache is enabled. Attackers with valid primary credentials can access authenticated routes without completing second-factor verification by exploiting premature session caching...

CVE-2026-67337: Authentication Bypass Using an Alternate Path or Channel

better-auth versions before 1.4.9 contain a two-factor authentication bypass vulnerability when session.cookieCache is enabled. Attackers with valid primary credentials can access authenticated routes without completing second-factor verification by exploiting premature session caching...

PT-2026-32325

Summary Under certain configurations, sessions may be considered valid before two-factor authentication 2FA is fully completed. This can allow access to authenticated routes without verifying the second factor. --- Description When two-factor authentication is enabled, the authentication flow...