CVE search · CVE-2026-46727
CVE-2026-46727
high 8.1
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.
Details
- Status
- Analyzed
- Published
- Last changed
- Source
- cve@mitre.org
- Weakness
- CWE-362
Severity
| Version | Score | Vector | Source |
|---|---|---|---|
| CVSS 3.1 | high 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
cve@mitre.orgSecondary |
Affected products
Vendor and product from the NVD’s CPE applicability statements. Versions and conditions are on the NVD’s page.
- ruby-lang · ruby
References
- https://hackerone.com/reports/3607434Permissions Required
- https://www.ruby-lang.org/en/news/2026/05/20/getaddrinfo-cve-2026-46727/Vendor Advisory