What is CVE-2026-67334?

CVE-2026-67334 is a low-severity vulnerability in Better-auth, classified under Incomplete Cleanup. CVSS score: 3.8/10. Published 2026-08-01.

How severe is CVE-2026-67334?

Low severity. CVSS v3 base score is 3.8 out of 10.

Vulnerability in Better-auth

CVE-2026-67334

better-auth versions before 1.6.11 fail to delete cached sessions when removing users via admin, anonymous, or SCIM endpoints when secondaryStorage is configured and storeSessionInDatabase is false. Attackers can reuse deleted user session…

CVSS v3 metric

CVSS v3 base score 3.8 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N.

Affected products

Better-auth — versions 0.3.4, 1.6.11, 1.6.0

Weakness classification (CWE)

CWE-459 — Incomplete Cleanup

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-67334?: CVE-2026-67334 is a low-severity vulnerability in Better-auth, classified under Incomplete Cleanup. CVSS score: 3.8/10. Published 2026-08-01.
How severe is CVE-2026-67334?: Low severity. CVSS v3 base score is 3.8 out of 10.