https://cvealert.net/vendors/ruby-lang/Recent content in Ruby-Lang on CVE Alert & Security FeedHugoen-usFri, 22 May 2026 18:16:22 +0000https://cvealert.net/posts/cve-2026-46727/Fri, 22 May 2026 18:16:22 +0000https://cvealert.net/posts/cve-2026-46727/An issue was discovered in Ruby 4 before 4.0.5. A race condition leading to a use-after-free in the pthread-based getaddrinfo timeout handler (rb_getaddrinfo in ext/socket/raddrinfo.c) allows a remote attacker who can delay DNS responses near the user-specified timeout to crash a Ruby process that calls Addrinfo.getaddrinfo(…, timeout:) or Socket.tcp(…, resolv_timeout:). Memory-corruption-based exploitation is theoretically possible. The attack could, for example, be carried out through a crafted authoritative DNS server or recursive resolver.