CVE-2026-53513

Description

Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.11, the @better-auth/sso plugin's POST /sso/register and POST /sso/update-provider endpoints accept attacker-controlled oidcConfig.userInfoEndpoint, tokenEndpoint, and jwksEndpoint URLs when skipDiscovery: true is set, store them on the ssoProvider row without origin validation, and fetch them during OIDC callback, allowing non-blind server-side request forgery and possible account linking when trustEmailVerified: true is configured. This issue is fixed in version 1.6.11.

Traduire en français

Produits concernés

• better-auth
• @better-auth sso
• Better-auth better-auth\/sso
• Better-auth better auth

Scores CVSS

Faiblesses (CWE)

• CWE-20
• CWE-345
• CWE-441
• CWE-918

Références

• https://github.com/better-auth/better-auth/commit/37f60cb176cb53147da7dfd5ec15afa5b486e81e Patch
• https://github.com/better-auth/better-auth/pull/9574 Issue TrackingPatch
• https://github.com/better-auth/better-auth/releases/tag/v1.6.11 Release Notes
• https://github.com/better-auth/better-auth/security/advisories/GHSA-5rr4-8452-hf4v MitigationVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories