Security Policy Supported Versions Apache XML Security for Java Version Supported 4.0.x ✅ 3.0.x ✅ 2.3.x ✅ 2.2.x ✅ < 2.2.x ❌ Apache XML Security for C++ This project is retired. Reporting a Vulnerability For information on how to report a new security problem please see here. Our existing security advisories are published here.