Changelog

Major bug fix

Fix SSH command line interface (CLI) authentication (regression in 2.284). JENKINS-65273
Fix NoSuchMethodError when using plugins that rely on bridge methods for compatibility (regression in 2.278). JENKINS-65605

Major enhancement

Remove Apache Commons Digester library and related code from the Jenkins core. pull 5320, JENKINS-65161 , Announcement and upgrade guidelines

Bug fix

Jenkins redirects users to the previous page after login even if they were able to view it while not logged in (regression in 2.266). JENKINS-64991
Improve contrast for the checkbox in the login page. pull 5536

Enhancement

Recommend running on Java 11. JENKINS-65577
Display Pipeline builds among user build history and remove incorrect warning about view build history. JENKINS-59412
Show implied plugin dependencies or a count of dependencies for plugins split from core. pull 5472
Explain that some plugin updates can be unavailable even on the latest version of a given release line (i.e. LTS). pull 5462
Update French terminology for controller. JENKINS-65398
Change the word 'number' to 'integer' in the error message of the number field. pull 5538
The Jenkins process management functionality now supports FreeBSD. pull 5563
Optimize access control checks affecting (at least) Pipeline node steps. pull 5586
Remove JEP-200 compatibility workarounds for releases published before February 2018 of the following plugins: Maven Integration, Job DSL, Monitoring, Git Client, Pipeline: Supporting APIs, OWASP Dependency-Check. pull 5454, Plugin versions with a fix, JEP-200
Update Stapler from 1.263 to 1563.v3da2d02f9572 to improve performance when encoding unicode characters in JSON API. pull 5422, Stapler 1527.ve41b3ce15c05 changelog, Stapler 1532.vfcf95addcb5f changelog, pull 5549, Stapler 1539.v2f05ce93882d changelog, Stapler 1563.v3da2d02f9572 changelog
Stop bundling the External Monitor Job Type, LDAP, and PAM Authentication plugins. Jenkins will no longer automatically install the External Monitor Job Type, LDAP, or PAM Authentication plugins on startup if a plugin depending on Jenkins 1.467 or earlier is discovered. If you use such a plugin that also relies on the functionality provided by the External Monitor Job Type, LDAP, or PAM Authentication plugin and manage plugins outside Jenkins' plugin manager, you will now need to ensure that a recent release of the External Monitor Job Type, LDAP, or PAM Authentication plugin is installed. Jenkins will attempt to load such plugins but may fail at any time during startup or afterwards with ClassNotFoundException or similar. pull 5445, External Monitor Job Type plugin, LDAP plugin, PAM Authentication plugin
Winstone 5.19: Update Jetty from 9.4.41.v20210516 to Jetty 9.4.42.v20210604. pull 5589, Winstone 5.19 changelog, Jetty 9.4.42 changelog
Bump spring-security-bom from 5.4.6 to 5.5.1. pull 5505, Spring project spring-security 5.5.0 release notes, pull 5598, Spring project spring-security 5.5.1 release notes
Bump sshd-core from 2.5.1 to 2.7.0 in Jenkins CLI. pull 5547
Add X-Frame-Options header to AJAX responses. pull 5555
Remove the Bytecode Compatibility Transformer library and related code from Jenkins core. Developer: Plugins that rely on the hudson.model.Queue$Item#id or hudson.model.AbstractProject#triggers fields must be updated to call the corresponding getters. pull 5526, Vertx plugin, Slave Prerequisites plugin
Stop sending HTTP response headers related to the remoting-based CLI (removed in 2.165). pull 5452
Internal: Upgrade from Remoting 4.7 to Remoting 4.10 with bugfixes and dependency updates. pull 5478, JENKINS-40700 , Remoting 4.8 changelog, pull 5539, Remoting 4.9 changelog, pull 5607, Remoting 4.10 changelog
Developer: Remove JTidy dependency from Jenkins core. Plugins that use JTidy functionality must be updated to explicitly declare a dependency on JTidy rather than relying on Jenkins core to provide this library. pull 5521, NIS notification lamp plugin
Developer: InterceptingExecutorService and its subclasses no longer extend com.google.common.util.concurrent.ForwardingExecutorService or com.google.common.collect.ForwardingObject. pull 5565
Developer: Remove jna-posix dependency from Jenkins core. Plugins that use jna-posix functionality must be migrated from jna-posix to jnr-posix. pull 5560, Maven Repository Scheduled Cleanup plugin, SICCI for Xcode plugin, java.io.tmpdir cleaner plugin
Developer: The hudson.util.SubClassGenerator and experimental hudson.model.TreeView class have been removed without replacement. pull 5566, pull 5603

Changelog for 2.303.1