medium6.5
CVE-2026-67337
better-auth versions before 1.4.9 contain a two-factor authentication bypass vulnerability when session.cookieCache is enabled.
Impact
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 products
| Product | Affected versions |
|---|---|
| Better-Auth | before 1.4.9 |
Versions were read from the advisory text. No structured product data has been published for this record yet.