Sourced from puma's releases.

6.4.3

• Security
  • Discards any headers using underscores if the non-underscore version also exists. Without this, an attacker could overwrite values set by intermediate proxies (e.g. X-Forwarded-For). (CVE-2024-45614/GHSA-9hf4-67fc-4vf4)

6.4.2

• Security
  • Limit the size of chunk extensions. Without this limit, an attacker could cause unbounded resource (CPU, network bandwidth) consumption. (GHSA-c2f4-cvqm-65w2)

6.4.1

• Bugfixes

  • DSL#warn_if_in_single_mode - fixup when workers set via CLI (#3256)
  • Fix idle-timeout not working in cluster mode (#3235, #3228, #3282, #3283)
  • Fix worker 0 timing out during phased restart (#3225, #2786)
  • context_builder.rb - require openssl if verify_mode != 'none' (#3179)
  • Make puma cluster process suitable as PID 1 (#3255)
  • Improve Puma::NullIO consistency with real IO (#3276)
  • extconf.rb - fixup to detect openssl info in Ruby build (#3271, #3266)
  • MiniSSL.java - set serialVersionUID, fix RaiseException deprecation (#3270)
  • dsl.rb - fix warn_if_in_single_mode when WEB_CONCURRENCY is set (#3265, #3264)

• Maintenance

  • LOTS of test refactoring to make tests more stable and easier to write - thanks to @​MSP-Greg!
  • Fix bug in tests re: TestPuma::HOST4 (#3254)
  • Dockerfile for minimal repros: use Ruby 3.2, expect bundler installed (#3245)
  • fix define_method calls, use Symbol parameter instead of String (#3293)

• Docs

  • README.md - add the puma-acme plugin (#3301)
  • Remove --keep-file-descriptors flag from systemd docs (#3248)
  • Note symlink mechanism in restart documentation for hot restart (#3298)

6.4.0 - The Eagle of Durango

America is #1 in professional cycling, baby!

• Features

  • on_thread_exit hook (#2920)
  • on_thread_start_hook (#3195)
  • Shutdown on idle (#3209, #2580)
  • New error message when control server port taken (#3204)

• Refactor

  • Remove Forwardable dependency (#3191, #3190)
  • Update URLMap Regexp usage for Ruby v3.3 (#3165)

• Bugfixes

  • Bring the cert_pem: parameter into parity with the cert: parameter to ssl_bind. (#3174)
  • Fix using control server with IPv6 host (#3181)
  • control_cli.rb - add require_relative 'log_writer' (#3187)

... (truncated)

Sourced from puma's changelog.

6.4.3 / 2024-09-19

• Security
  • Discards any headers using underscores if the non-underscore version also exists. Without this, an attacker could overwrite values set by intermediate proxies (e.g. X-Forwarded-For). (CVE-2024-45614/GHSA-9hf4-67fc-4vf4)

6.4.2 / 2024-01-08

• Security
  • Limit the size of chunk extensions. Without this limit, an attacker could cause unbounded resource (CPU, network bandwidth) consumption. (GHSA-c2f4-cvqm-65w2)

6.4.1 / 2024-01-03

• Bugfixes

  • DSL#warn_if_in_single_mode - fixup when workers set via CLI (#3256)
  • Fix idle-timeout not working in cluster mode (#3235, #3228, #3282, #3283)
  • Fix worker 0 timing out during phased restart (#3225, #2786)
  • context_builder.rb - require openssl if verify_mode != 'none' (#3179)
  • Make puma cluster process suitable as PID 1 (#3255)
  • Improve Puma::NullIO consistency with real IO (#3276)
  • extconf.rb - fixup to detect openssl info in Ruby build (#3271, #3266)
  • MiniSSL.java - set serialVersionUID, fix RaiseException deprecation (#3270)
  • dsl.rb - fix warn_if_in_single_mode when WEB_CONCURRENCY is set (#3265, #3264)

• Maintenance

  • LOTS of test refactoring to make tests more stable and easier to write - thanks to @​MSP-Greg!
  • Fix bug in tests re: TestPuma::HOST4 (#3254)
  • Dockerfile for minimal repros: use Ruby 3.2, expect bundler installed (#3245)
  • fix define_method calls, use Symbol parameter instead of String (#3293)

• Docs

  • README.md - add the puma-acme plugin (#3301)
  • Remove --keep-file-descriptors flag from systemd docs (#3248)
  • Note symlink mechanism in restart documentation for hot restart (#3298)

6.4.0 / 2023-09-21

• Features

  • on_thread_exit hook (#2920)
  • on_thread_start_hook (#3195)
  • Shutdown on idle (#3209, #2580)
  • New error message when control server port taken (#3204)

• Refactor

  • Remove Forwardable dependency (#3191, #3190)
  • Update URLMap Regexp usage for Ruby v3.3 (#3165)

• Bugfixes

  • Bring the cert_pem: parameter into parity with the cert: parameter to ssl_bind. (#3174)
  • Fix using control server with IPv6 host (#3181)
  • control_cli.rb - add require_relative 'log_writer' (#3187)

... (truncated)

• e867e53 6.4.3
• 63a27b5 5.6.9 release note [ci skip]
• cac3fd1 Merge commit from fork
• 5fc43d7 5.6.8 and 6.4.2
• dfbba22 6.4.2
• 60d5ee3 Merge pull request from GHSA-c2f4-cvqm-65w2
• a287025 6.4.1 version tick!
• 32a629d 6.4.1
• 7e17826 [Fix #3282] idle-timeout not waiting on all workers in cluster mode (#3283)
• 437142e README.md - add the puma-acme plugin (#3301)
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