June 2026 monthly work summary for core database encryption and query processing (repositories: percona/percona-server-mongodb, mongodb/libmongocrypt). Key focus: hardening data integrity and enabling GA-ready encryption features through QE (Query Execution) improvements and libmongocrypt upgrades.

May 2026 monthly summary for percona/percona-server-mongodb: Delivered three focused changes spanning security, reliability, and encryption robustness. This work adds encrypted PEM support for gRPC egress, improves error visibility by propagating TransientTransactionError through the FLE bulk path, and hardens the FLE2 encryption path against underflow vulnerabilities. These efforts reduce security risk, improve operator observability, and enable more robust client interactions with protected keys.

April 2026: Resharding Safety Enhancements delivered for percona/percona-server-mongodb. Implemented safety measures to protect data during resharding: pause range deletions on collections undergoing resharding to preserve data integrity, and abort resharding for collections that have MongoDB Search indexes. Includes tests validating both safety behaviors. This work reduces risk of data loss during resharding and improves production reliability. Commits include 17959fb42919710644b69dbf972979e6fd41b9a3 and 15cd28f3bdb8d1a1d98990c5fe500be20229c04c.