OpenSSL 3.5.0 release for Questing Quokka

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OpenSSL 3.5.0 has been uploaded to the archive.

The most notable updates are:

  1. Support for server side QUIC (RFC 9000).
  2. Support for PQC algorithms (ML-KEM, ML-DSA and SLH-DSA).
  3. The default TLS supported groups list has been changed to include and prefer Hybrid PQC KEM groups.

You can read the full release notes here.

OpenSSL Foundation has written a nice series of articles on the new features:

https://openssl-foundation.org/post/2025-03-12-quic-server-addition/index.html

It is unlikely there will be another upload before Feature Freeze, but there may be a bug-fix upload after that.

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