5.3Mittel
CVE-2026-67335better-auth before 1.6.2 OAuth State Validation Bypass
Beschreibung
better-auth versions before 1.6.2 fail to validate the OAuth state parameter against the stored nonce when using cookie-backed state storage without PKCE. Attackers can forge the state parameter and supply an attacker-controlled authorization code to create authenticated sessions bound to the attacker's external identity or persistently link attacker accounts to victim profiles.
Schwachstellentyp (CWE):
CWE-287
Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.
Betroffene Produkte und Versionen
| Hersteller | Produkt | Versionen | |
|---|---|---|---|
| better-auth | better-auth | < 1.6.2, fixed 1.6.2 | |
| better-auth | better-auth/oauth-provider | < 1.6.2 |
Referenzen und Patches
- GitHub Security Advisory (GHSA-wxw3-q3m9-c3jr) vendor-advisory
- VulnCheck Advisory: better-auth before 1.6.2 OAuth State Validation Bypass third-party-advisory