GitHub Security Advisory (GHSA-2vg6-77g8-24mp)Vendor advisory
https://github.com/better-auth/better-auth/security/advisories/GHSA-2vg6-77g8-24mp CVE-2026-67334
MEDIUM
better-auth Stale Sessions Persist After User Deletion
Record summary
CVE-2026-67334 has a selected CVSS score of 5.1 (medium).
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.
Description source: CVE List
Exploitation context
CISA SSVC decision
ExploitationNone
AutomatableNo
Technical impactPartial
CISA Coordinator · SSVC 2.0.3 · Evaluated Aug 3, 2026 · Source: CVE List
Affected products and versions
1| Product | Source | Version range | Status |
|---|---|---|---|
better-authBrowse better-auth / better-authDefault status: unaffected | CVE List | 0.3.4 to < 1.6.11 | affected |
| 1.6.11 | unaffected | ||
| 1.6.0 to < 1.6.11 | affected |
References
3nvd.nist.gov
https://nvd.nist.gov/vuln/detail/CVE-2026-67334 VulnCheck Advisory: better-auth Stale Sessions Persist After User DeletionThird-party advisory
https://www.vulncheck.com/advisories/better-auth-stale-sessions-persist-after-user-deletion