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.
- Score
- CVSS 4.0 7.1 High
- Status
- Deferred - disclosure@vulncheck.com
- Published
- 2026-08-01
- Last modified
- 2026-08-03
- Weaknesses
- CWE-288
Affected products
References
- https://github.com/better-auth/better-auth/security/advisories/GHSA-xg6x-h9c9-2m83
- https://www.vulncheck.com/advisories/better-auth-before-two-factor-authentication-bypass-via-session-cookiecache
