Ruby 4.0.5

4.0.5May 20, 2026 · 3 months ago

Ruby 4.0.5 Released

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 unde…

Fixed 1

Fix build system regression from Ruby 4.0.4

Security 1

Fix use-after-free in pthread-based getaddrinfo timeout handler (CVE-2026-46727)

Upgraded? How did it go?

Discussion