June 2026: Key security, reliability, and configurability milestones across Chainlink repos. Vault hardening and core enhancements delivered with validation of encryption key labels and duplicate secret requests, improved error handling, and an updated authorization flow. Implemented Vault Pending Queue Limit to cap per-OCR round writes, boosting stability under OCR workloads. Added Pending Queue Write Size Limit configuration in chainlink-common to better manage load and prevent queue overflow. Introduced a Label Consensus flag to govern secret sharing and aggregation with support for public keys, accompanied by documentation and tests. All changes include targeted tests, lint fixes, and go mod updates to improve maintainability and deploy confidence.

May 2026 monthly summary focusing on vault, secret management, and vault-driven performance improvements across core Chainlink repos. The team delivered significant security hardening, throughput enhancements under load, and robust test coverage and configuration validation.