Vulnerability Description
socket.getaddrinfo() previously accepted null bytes within *host* and *port* parameters which can cause the values to be silently truncated.
Related Weaknesses (CWE)
References
- https://github.com/python/cpython/commit/131a3a66c5f400b588f9fd2732a5ed4e89623ee
- https://github.com/python/cpython/issues/160898
- https://github.com/python/cpython/pull/160899
- https://mail.python.org/archives/list/[email protected]/thread/HCHE62
- http://www.openwall.com/lists/oss-security/2026/10/29/4
FAQ
What is CVE-2026-116566?
CVE-2026-116566 is a documented vulnerability. socket.getaddrinfo() previously accepted null bytes within *host* and *port* parameters which can cause the values to be silently truncated.
How severe is CVE-2026-116566?
CVSS scoring is not yet available for CVE-2026-116566. Check NVD for updates.
Is there a patch for CVE-2026-116566?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.