EUVD-2025-210592

better-auth npm before 1.4.2 allows an external request to configure baseURL when it is not otherwise defined e.g., BETTERAUTHURL is unset. An attacker able to make the very first request to the server after startup can poison the router's base path, causing all routes to return 404 for all users...

EUVD-2026-51841

better-auth versions = 1.1.3 and = 1.7.0-beta.0 and 1.7.0-beta.10 are vulnerable to account takeover via pre-account hijacking on magic-link and email-OTP sign-in when open email/password registration is enabled. An attacker registers an account with the victim's email address and an...

CVE-2025-27143 Beter Auth has an Open Redirect via Scheme-Less Callback Parameter

Better Auth is an authentication and authorization library for TypeScript. Prior to version 1.1.21, the application is vulnerable to an open redirect due to improper validation of the callbackURL parameter in the email verification endpoint and any other endpoint that accepts callback url. While...

CVE-2025-27143 Beter Auth has an Open Redirect via Scheme-Less Callback Parameter

Better Auth is an authentication and authorization library for TypeScript. Prior to version 1.1.21, the application is vulnerable to an open redirect due to improper validation of the callbackURL parameter in the email verification endpoint and any other endpoint that accepts callback url. While...