{"id":"CVE-2026-67337","title":"better-auth versions before 1.4.9 contain a two-factor authentication bypass vulnerability when session.cookieCache is enabled","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 ver…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-288"],"published":"2026-08-01","updated":"2026-09-08","sourceUpdated":"2026-09-08T20:34:34.997","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-67337","references":[{"url":"https://github.com/better-auth/better-auth/security/advisories/GHSA-xg6x-h9c9-2m83","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/better-auth-before-two-factor-authentication-bypass-via-session-cookiecache","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"epss":0.00269,"epssPercentile":0.19275,"ingestedAt":"2026-08-02T09:18:11.484Z","slug":"CVE-2026-67337","body":"## Overview\n\nbetter-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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}