CVE-2026-67337CWE-288

CVE-2026-67337

Medium · published August 1, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
39.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00462 · 39.1th percentile
Weakness
CWE-288 · Authentication Bypass Using an Alternate Path or Channel
Published
2026-08-01T17:17Z
References (2)
https://github.com/better-auth/better-auth/security/advisories/GHSA-xg6x-h9c9-2m83 · [email protected]https://www.vulncheck.com/advisories/better-auth-before-two-factor-authentication-bypass-via-session-cookiecache · [email protected]
EPSS history
Timeline
  • 01 AUG 12:22Z
    better-auth before 1.4.9 Two-Factor Authentication Bypass via session.cookieCache
    cvelistv5