March 2026 focused on security hardening, compatibility improvements, and native build readiness across two major repositories. In hapifhir/hapi-fhir, we delivered critical security vulnerability fixes by upgrading server dependencies (tomcat-embed-core to 10.1.52 to mitigate CVE-2026-24734 and Jetty to 12.0.32 to address CVE-2026-1605), with related changelog updates and dependency pinning. We also completed test-suite compatibility work after the Spring Boot 3 migration, ensuring SampleJerseyRestfulServerApplicationTest passes with confirmed Jersey configuration and a Jersey 3.x upgrade path (3.1.11) to resolve NoSuchMethodError and routing issues. In quarkusio/quarkus, we implemented a conditional DefaultJwtValidator registration to avoid NoClassDefFoundError during GraalVM native-image builds, improving native build stability when the required library is present. These changes were complemented by dependency pinning and changelog updates to improve traceability. Overall, the work reduces security risk, stabilizes native builds, and accelerates enterprise adoption by delivering concrete, verifiable improvements across core interfaces and build paths.