GHSA-955P-X3MX-JCVP Next.js: Unauthenticated disclosure of internal Server Function endpoints

Impact In Next.js applications using App Router, Server Actions use server or use cache endpoints can be disclosed bypassing any authentication on the pages where these endpoints are usually used. Server Action IDs can be disclosed to unauthenticated users via publicly served client artifacts for...

PT-2026-63558

Name of the Vulnerable Software and Affected Versions Next.js versions 12.0.0 through 15.5.20 Next.js versions 16.0.0 through 16.2.10 Description Applications using App Router, Server Actions use server, or use cache endpoints may disclose these endpoints, bypassing authentication on the pages...