CVE-2026-67337
7.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| better-auth | better-auth | 0 < 1.4.9 | affected |
| better-auth | better-auth | 1.4.9 | unaffected |
Weaknesses
- CWE-288: Authentication Bypass Using an Alternate Path or Channel
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
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