Changelog for 2.400

Legend:

security fix
major bug fix
bug fix
major enhancement
enhancement

Community feedback:

no major issues
notable issues
required rollback

What's new in 2.400 (2023-04-11)

Important security fix. (2023-06-14 security advisory)
Fix radio buttons in repeated blocks in configuration forms (regression in 2.391). (issue 70988)
Fix null pointer exception on the "Manage Jenkins" page when HTTP/2 is enabled. (issue 70630)