Month: 2026-05 Overview: This period focused on security enhancements for UDR module loading in FirebirdSQL/firebird, with an initial improvement to strengthen sandbox isolation by validating path lengths and sanitizing module names. The work aimed to reduce attack surface from sandbox escapes and directory traversal. However, changes were rolled back to address a regression, preserving stability and compatibility while allowing for a more robust future approach. Key outcomes: - Implemented Module Loading Security Enhancements to validate loading paths and sanitize module names; commits included to compare source vs. resulting path lengths and prevent directory traversal (11bd9d...; a319cd5f...). - Reverted Sandbox Escape Prevention changes due to regression — rollback committed to revert the previous changes (9df1362...). - Maintained system stability and compatibility during security work; established clear rollback trace and governance for security fixes. - Documented changes and commit rationale to support future security initiatives and easier auditing.