← CVE Intelligence

CVE-2025-71402

better-auth before 1.4.0 Session Revocation via Forged Cookie PUBLISHED

Description (CNA)

better-auth versions greater than 1.3.34 and before 1.4.0 contain a vulnerability in the multi-session plugin's /sign-out after-hook, which trusts raw multi-session cookies and forwards extracted values to internalAdapter.deleteSessions without verifying the cookie signature (e.g., via getSignedCookie). An attacker can supply a forged _multi-* cookie to trigger deletion of arbitrary session tokens.

Affected (CNA)

Vendor / productVersions
better-auth / better-authaffected 0 before 1.4.0; unaffected 1.4.0

CWE

CWE-347

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.