JetBrains releases Ktor 3.6.0 with HTTP/3 and OpenID Connect support

JetBrains released Ktor 3.6.0 on September 18, 2026, an update to the open-source Kotlin framework for server applications. It adds experimental HTTP/3 (QUIC) support in the Netty engine, typed OpenID Connect authentication, and routing improvements.

• HTTP/3 on QUIC available in Netty engine for lower latency
• Typed OpenID Connect module reduces token errors
• Client gets ready-made settings for JVM, JS, and native targets
• Ktor 4.0 release planned for early 2027