CVE-2026-46727
High · 8.1CVSS
8.1
EPSS
0.5%
Published
May 22, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| openSUSE:Tumbleweed | ruby4.0 | 0 | 4.0.5-1.1 |
Related vulnerabilities
- CVE-2026-41316 ERB is a templating system for Ruby. Also affects ruby4.0
- CVE-2026-114641 Traefik 2.11.x before 2.11.58 and 3.x before 3.7.14 contains a race condition in NTLM and… CWE-362
- CVE-2026-109279 ImageMagick before 6.9.13-57 and 7.x before 7.1.2-32 lacks proper synchronization when… CWE-362
- CVE-2026-97032 HTTP/2 servers could end up crashing due to inadvertently modifying its HPACK encoder… CWE-362
- CVE-2026-98163 In the Linux kernel, the following vulnerability has been resolved: cgroup: Avoid… CWE-362
- CVE-2026-98146 In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Remove… CWE-362
- CVE-2026-98153 In the Linux kernel, the following vulnerability has been resolved: nvme: fix racy access… CWE-362
- CVE-2026-98130 In the Linux kernel, the following vulnerability has been resolved: sctp: fix a TOCTOU… CWE-362