CVE-2025-71401

The connected CVE entry describes a vulnerability in better-auth (npm) before 1.4.2 where an external request can configure baseURL when it is not defined (e.g., BETTER_AUTH_URL unset). An attacker who can trigger the first request after startup can poison the router’s base path, causing all rout...

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...

CVE-2025-71401 better-auth before 1.4.2 basePath Modification DoS

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...

CVE-2025-71401 better-auth before 1.4.2 basePath Modification DoS

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...

PT-2025-62895

Name of the Vulnerable Software and Affected Versions better-auth npm versions prior to 1.4.2 Description An issue exists where an external request can configure the baseURL when it is not explicitly defined for example, when BETTER AUTH URL is unset. This occurs because the system implicitly...