8.7Yüksek
CVE-2026-67336better-auth before 1.6.11 Insecure Cryptographic Defaults via oidcProvider
Açıklama
better-auth versions before 1.6.11 contain insecure cryptographic defaults in the oidcProvider and mcp plugins that advertise the none algorithm and accept plain PKCE by default. Attackers can exploit algorithm negotiation to accept unsigned tokens or intercept authorization codes when PKCE plain is used instead of the required S256 method.
Zayıflık türü (CWE):
CWE-327
Veri: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Bilgiler kaynaktaki haliyle, İngilizce yayımlanır.
Etkilenen ürünler ve sürümler
| Üretici | Ürün | Sürümler | |
|---|---|---|---|
| better-auth | better-auth | < 1.6.11, fixed 1.6.11 | |
| better-auth | better-auth/oauth-provider | < 1.6.11 |
Kaynaklar ve yamalar
- GitHub Security Advisory (GHSA-9h47-pqcx-hjr4) vendor-advisory
- VulnCheck Advisory: better-auth before 1.6.11 Insecure Cryptographic Defaults via oidcProvider third-party-advisory