Zurück zur CVE-Übersicht
CVE-2026-53517
HIGH(8.1)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Risk Signal Score30/100 — MITTEL
- CVSS 8.1 — Hoch
- Weniger als 24 Stunden alt
Beschreibung
Better Auth is an authentication and authorization library for TypeScript. From 1.4.8-beta.7 until 1.6.11, the @better-auth/oauth-provider POST /oauth2/token endpoint on the refresh_token grant performs a non-atomic read, validate, revoke, and mint sequence on the oauthRefreshToken row, allowing concurrent requests with the same parent refresh token to pass the revoked check and create forked refresh-token families; the vulnerable range also includes embedded better-auth plugin versions before 1.6.0. This issue is fixed in version 1.6.11.
GitHub Advisories
GHSA-392p-2q2v-4372HIGH
Better Auth: OAuth refresh-token rotation forks the token family on concurrent redemption
npm/@better-auth/oauth-provider→ 1.6.11
GitHub Advisory