## Ruby 4.0.5 Released

- 種別: release
- 関連技術: ruby, github
- CVE: CVE-2026-46727
- 公開日時: 2026-05-20T00:12:20.000Z
- 情報源: Ruby News (https://www.ruby-lang.org/en/news/2026/05/20/ruby-4-0-5-released/)
- パーマリンク: https://vulnpulse.app/items/ruby-news-088b5b86a5e1

Ruby 4.0.5 has been released. This release only contains a security fix for CVE-2026-46727: Use-after-free in pthread-based getaddrinfo timeout handler and a build system regression in Ruby 4.0.4 under C locale [Bug #22065] . Please see the GitHub releases for further details. Release Schedule We intend to release the latest stable Ruby version (currently Ruby 4.0) every two months following the most recent regular release. Ruby 4.0.6 will be released in July, 4.0.7 in September, and 4.0.8 in November. If a change arises that significantly affects users, a release may occur earlier than plann…