During April 2026, Prabhanjan Desai focused on security hardening for the datastax/pulsar repository, specifically targeting the 4.x branch. He addressed a critical production risk by updating Java dependencies and XML configuration files to remediate multiple CVEs, thereby improving the security and stability of deployments. His approach emphasized precise dependency management and thorough patch verification, ensuring that updates were both effective and traceable. By maintaining clear commit documentation, Prabhanjan enabled straightforward audits and potential rollbacks. Although the work centered on a single bug fix, it demonstrated depth in security updates and reinforced the reliability of the Pulsar 4.x codebase.