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THREAT OPS › Threat News › [NVD] CVE-2026-67337 (MEDIUM 6.5) — 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 c

[NVD] CVE-2026-67337 (MEDIUM 6.5) — 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 c

mednvdPublished 2026-08-01

CVE-2026-67337 CVSS: 6.5 MEDIUM Published: 2026-08-01T13:17:04.693

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.

MITRE ATT&CK techniques

Indicators of compromise

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-67337