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Security

Important security fixes. security advisory

Major enhancement

Security hardening: Escape variables in Jelly views by default. announcement blog post, LTS upgrade guide, list of affected plugins

Major bug fix

Update Winstone-Jetty from 4.4 to 5.0 to fix HTTP/2 support and threading problems on hosts with 30+ cores. JENKINS-53239 , JENKINS-52804 , JENKINS-51136 , JENKINS-52358

Enhancement

Security hardening related to Stapler routing. SECURITY-595 in the 2018-12-05 security advisory
Security hardening related to HTTP verb restrictions for web methods.
Extend anonymous usage statistics with information about applied security fix escape hatches. JEP-214

Bug fix

Fix a thread safety issue when creating multiple nodes in parallel. JENKINS-53401
Nested f:repeatable/f:repeatableProperty form elements inherited minimum when they shouldn't. JENKINS-37599