CVE-2026-53515
CVE-2026-53515 · Better Auth: Privilege escalation via SSO provider registration: missing admin role check in @better-auth/sso
Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.
Better Auth is an authentication and authorization library for TypeScript. From 1.2.10 until 1.6.11, the @better-auth/sso plugin's POST /sso/register endpoint lets any organization member attach a new SSO provider to that organization because registerSSOProvider checks only for a membership row and does not require an owner or admin role, allowing attacker-controlled OIDC or SAML providers to drive /sso/callback/{providerId} organization provisioning. This issue is fixed in version 1.6.11.
CVSS 7.1 · Élevée · EPSS 0,4% · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: node
Produits et versions concernés
better-auth
- Versions du logiciel
- >= 1.2.10, < 1.6.11: Concernée
Aucun correctif publié
sso
- Versions du logiciel
- >= 1.2.10, < 1.6.11: Concernée
Aucun correctif publié
@better-auth/sso npm
- Plages de versions concernées
- SEMVER: ≥ 1.2.10, < 1.6.11
Mettez à jour vers 1.6.11
Sources originales
- https://github.com/better-auth/better-auth/security/advisories/GHSA-gv74-j8m3-fg5f
- https://github.com/better-auth/better-auth/pull/9220
- https://github.com/better-auth/better-auth/commit/86765f1597378f5c3deed1b80ca91faac0a6bf00
- https://github.com/better-auth/better-auth/releases/tag/v1.6.11
- https://nvd.nist.gov/vuln/detail/CVE-2026-53515