Is CVE-2026-46727 actively exploited?

No active exploitation of CVE-2026-46727 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-46727 be exploited remotely?

Yes. CVE-2026-46727 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-46727?

CVE-2026-46727 has a CVSS score of 8.1 (HIGH).

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HIGH

CVE-2026-46727

CWE-362Published: May 22, 2026· Updated: May 26, 2026

8.1

CVSS v3.1

EPSS:0.10%probability of exploitation in 30 daysPercentile:27.5th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-46727 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.1.