Spring Boot 4.1 Adds gRPC Auto-Configuration, SSRF Mitigation, and Kotlin 2.3 Support (opens in new tab)

Broadcom released Spring Boot 4.1 on June 10, 2026, to deliver gRPC auto-configuration, HTTP-client SSRF mitigation, and upgrades to Kotlin 2.3. It also brings lazy datasource connections, async context propagation for @Async methods, and improved OpenTelemetry support. Uncharacteristically, Broadcom moved the releases twice, first from May 11-22 to June 1-5, then to June 8-12.