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

Score

CVSS 4.0 5.1 Medium

Status

Deferred - disclosure@vulncheck.com

Published

2026-08-01

Last modified

2026-10-08

Weaknesses

CWE-459

Affected products

• Better-auth/oauth-provider (Better-auth)

References

• https://github.com/better-auth/better-auth/security/advisories/GHSA-2vg6-77g8-24mp
• https://www.vulncheck.com/advisories/better-auth-stale-sessions-persist-after-user-deletion