Auth0

Auth0 is a widely adopted identity and access management platform whose vulnerability profile reflects the centrality of authentication and session handling across modern web and mobile applications. The vendor's disclosure footprint spans authentication libraries such as auth0.js and nextjs-auth0, token-handling components like jsonwebtoken, and lock/login interfaces, products that sit in the critical path between applications and their users. Vulnerabilities affecting Auth0 skew toward serious outcomes, with an elevated share reaching critical severity, and recur through weakness classes including cross-site scripting, improper authentication, CSRF, authorization flaws, and cryptographic signature verification issues—classes that are characteristic of identity platforms where a single flaw can compromise authentication or session integrity across dependent applications. Defenders should treat Auth0 advisories as broadly applicable across their application portfolios and prioritize updates to authentication libraries and login flows; live severity and exploitation activity are shown alongside this summary.