Report: CVE-2026-41427 - Better Auth OAuth 2.1 Provider: Unprivileged users can register OAuth clients
CVE ID :CVE-2026-41427 Published : April 24, 2026, 7:23 p.m. | 33 minutes ago Description :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. Severity: 0.0 | NA Visit the link for more details, such as CVSS details, affected products, timeline, and more...