CVE-2026-67337
MEDIUMbetter-auth before 1.4.9 Two-Factor Authentication Bypass via session.cookieCache
Title source: cnaDescription
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.
References (2)
Core 2
Core References
Vendor Advisory vendor-advisory
GitHub Security Advisory (GHSA-xg6x-h9c9-2m83)
https://github.com/better-auth/better-auth/security/advisories/GHSA-xg6x-h9c9-2m83
Third Party Advisory third-party-advisory
VulnCheck Advisory: better-auth before 1.4.9 Two-Factor Authentication Bypass via session.cookieCache
https://www.vulncheck.com/advisories/better-auth-before-two-factor-authentication-bypass-via-session-cookiecache
Scores
CVSS v3
6.5
EPSS
0.0027
EPSS Percentile
18.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-288
Status
published
Products (2)
better-auth/better-auth
< 1.4.9
better-auth/better-auth
1.4.9
Published
Aug 01, 2026
Tracked Since
Aug 01, 2026