CVE-2026-67337
better-auth before 1.4.9 Two-Factor Authentication Bypass via session.cookieCache
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-288 |
| Vendor | better-auth |
| Product | better-auth |
| Published | Aug 1, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
better-auth / better-auth
0 < 1.4.9
References
Credits
🔍 TriDecent