CVE-2026-41427: better-auth/oauth-provider

csirt@kutim:~/threat-intel/cve/CVE-2026-41427

CVSS 6.5 · Medium EPSS 0,37%

Kerentanan Incorrect Authorization pada better-auth/oauth-provider. Skor CVSS 3.1 6.5 (Medium) menurut NVD.

Deskripsi (NVD)

Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.5, the clientPrivileges option documents a create action, but the OAuth client creation endpoints did not invoke the hook before persisting new clients. Deployments that configured clientPrivileges to restrict client registration were not actually restricted — any authenticated user could reach the create endpoints and register an OAuth client with attacker-chosen redirect URIs and metadata. This vulnerability is fixed in 1.6.5.

Rincian

Terbit di NVD: 24 April 2026
Terakhir diubah: 17 Juni 2026
Status NVD: Analyzed
CVSS 3.1: 6.5 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-863: Incorrect Authorization
EPSS (30 hari): 0,37% peluang dieksploitasi; lebih tinggi dari 28,9% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
better-auth	better-auth/oauth-provider	Versi 1.4.9 hingga sebelum 1.6.5
better-auth	better-auth/oauth-provider	Versi 1.4.8
better-auth	better-auth/oauth-provider	Versi 1.4.8 beta7
better-auth	better-auth/oauth-provider	Versi 1.7.0 beta0

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://github.com/better-auth/better-auth/security/advisories/GHSA-xr8f-h2gw-9xh6 mitigasi · advisory vendor

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:11 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.