CVE-2026-67334

better-auth Stale Sessions Persist After User Deletion

LOW
3.8
CVSS Score
Published: August 1, 2026 at 12:22 PM UTC
Updated: October 8, 2026 at 04:17 PM UTC
2 products affected across 1 vendorBetter Auth /oauth ProviderAuth Better Auth

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Severity
LOW3.8
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0.3.4 ≤ v < 1.6.111.6.0 ≤ v < 1.6.11
Affected range stops below 1.6.11, so it looks safe — our inference, not a vendor statement
0.3.4 ≤ v < 1.6.111.6.0 ≤ v < 1.6.110.3.41.6.0
Vendor states this is fixed in 1.6.11 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.8LOWVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-459

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