Changelog for 2.103

Legend:

security fix
major bug fix
bug fix
major enhancement
enhancement

Community feedback:

no major issues
notable issues
required rollback

What's new in 2.103 (2018-01-21)

JEP-200: "Switch Remoting/XStream denylist to an allowlist" has been integrated into 2.102. This change implies a HIGH RISK of regressions in plugins. See this blogpost for list of plugins known to be affected, with instructions how to resolve possible problems.

Permit additional safe types for use in XStream (XML serialization) and Remoting (agent communication). (issue 48946 , issue 49000 , issue 49025 )
Re-style the Manage Jenkins page, including administrative monitors. (issue 43786 , blog post)
Make Blue Ocean work on Wildfly by excluding its outdated Jackson implementation from the Jenkins class path. (issue 48957)
Do not downgrade detached plugins when upgrading Jenkins while its previous version was not properly recorded. (issue 48899)
Restore file permissions granted to group and other for file created by Jenkins (regression in 2.93). (issue 48407)
Fix a race condition in Initializer implementations creating Items that resulted in their deletion. (issue 47406)
A ClassCastException or NoSuchMethodException could under certain circumstances mask the actual error when loading erroneous data from an XML file. (issue 49054)
Properly add apostrophes to several localized strings that were missing them before. (pull 3203)
Developer: Improve detection of current plugin's or test's classes for exclusion from JEP-200 filtering. (pull 3237)