JRuby

The JRuby community is pleased to announce the release of JRuby 9.4.14.0.

• Homepage: https://www.jruby.org/
• Download: https://www.jruby.org/download

JRuby 9.4.14.x targets Ruby 3.1 compatibility.

Thank you to our contributors this release, you help keep JRuby moving forward! @matthias-fratz-bsz, @ikaronen-relex, @ylecuyer

Compatibility

• Ruby version is now 3.1.7. (#8966)

Libraries

• strscan is updated to 3.1.5. (#8897)
• cgi is updated to 0.3.7 to resolve CVE-2025-27220 and CVE-2025-27219 (#8954, #8966)
• uri is updated to 0.12.4. (#8966)
• net-smtp is updated to 0.3.1.1. (#8966)
• rss is updated to 0.3.1. (#8966)
• Non-gem stdlib has been updated to Ruby 3.1.7 sources. (#8966)

Build

• jruby-maven-plugins is updated to 3.0.6 to resolve issues with garbled gem poms. (#8898)
• The stdlib build scripts have been modified to work with latest polyglot-ruby. (#8634, #8963)

Usability

• bin/ruby and bin/ruby.bat are now shipped in the distribution, to make installation simpler. (#8875)

29 Issues and PRs resolved for 9.4.14.0

• #8422 ConcurrentLocalContextProvider leaks memory per thread
• #8634 9.4.12.0 unable to build itself
• #8670 Setting system property ‘jruby.gem.home’ works but outputs a warning
• #8779 Marshal.dump(binding) behavior differs from CRuby
• #8823 Failure in StringScanner#scan_integer when running the HexaPDF test suite
• #8859 bundle gem does not fully run
• #8866 JRuby 9.4.13.0 introduces LoadError: no such file to load -- Win32API via stdlib/net/http on Windows
• #8875 Pregenerate bin/ruby and bin/ruby.bat
• #8883 Normalize arch to universal-java-version
• #8884 Require the correct case for this library
• #8885 Coerce the chdir for popen
• #8897 Update strscan to fix number scanning at nonzero offset
• #8898 Update maven plugins to latest
• #8902 Sporadic failure in TestArray#test_insert under indy
• #8904 Always check array insert pos
• #8909 Make Binding unmarshalable
• #8918 Don’t set callInfo when target does not use kwargs
• #8919 Update vendored cgi gem
• #8933 Output buffer size calculation for unpack(‘m’) and unpack(‘u’) can overflow for long inputs
• #8936 Fix integer overflow in buffer length calculation for unpack(‘m’) and unpack(‘u’)
• #8954 Secuity: Bump cgi to 0.4.2. CVE-2025-27220 CVE-2025-27219
• #8961 Fix index -1 error while searching for feature path
• #8963 Upgrade polyglot and remove openssl lib hack
• #8966 Update stdlib to 3.1.7
• #8968 Pass multi-elt array key for to_h using yieldArray
• #8969 Fix memory leak in Concurrent/ThreadSafeLocalContextProvider
• #8970 Move jruby.gem.home and jruby.gem.path to Options
• #8973 Pathname::glob behavior changed with 9.4.13.0 and later
• #8980 Additional fixes for scheme-based globbing (9.4)