CVE-2026-67334

better-auth Stale Sessions Persist After User Deletion

State: Published
Severity: 5.1 Medium
Published: Aug 1, 2026
Updated: Oct 8, 2026
Reserved: Jul 29, 2026

Description

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 tokens to maintain authentication for up to seven days after account deletion.

Scores

CVSS	Score	Vector	Source
4.0	5.1 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N	VulnCheck
3.1	3.8 Low	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N	VulnCheck

Weaknesses

CWE-459 Incomplete Cleanup

Affected Products

Product	Versions
better-authbetter-auth	0.3.4 to before 1.6.11Affected 1.6.11Not affected
better-authbetter-auth	1.6.0 to before 1.6.11Affected 1.6.11Not affected

References

GitHub Security Advisory (GHSA-2vg6-77g8-24mp)vendor-advisory
VulnCheck Advisory: better-auth Stale Sessions Persist After User Deletionthird-party-advisory

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