During February 2025, Madlnu focused on security hardening for the apache/celeborn repository by addressing critical dependency vulnerabilities. They upgraded the Ratis library from version 3.1.2 to 3.1.3, directly mitigating CVE-2024-7254 and Sonatype-2020-0026, and ensured the change was fully documented and traceable. Madlnu applied their expertise in Scala and dependency management to perform comprehensive build sanity checks and regression testing, confirming compatibility and stability after the upgrade. Although no user-facing features were introduced, their work improved the project’s compliance and long-term maintainability by proactively managing third-party risks and reinforcing the repository’s security posture.