During January 2026, Winter developed and integrated a new VCard Fuzzer for the libical project within the google/oss-fuzz repository. Using C++ and leveraging fuzz testing methodologies, Winter focused on expanding automated test coverage for the vCard parsing path, targeting early detection of edge-case crashes and input handling vulnerabilities. The work involved creating a dedicated fuzzer source file and updating build scripts to ensure seamless inclusion in the OSS-Fuzz pipeline, enabling continuous regression testing. This contribution laid the foundation for broader calendar-related fuzzing, improved release confidence for libical, and strengthened open-source software testing standards through collaborative engagement with project maintainers.