CVE-2026-116566

socket.getaddrinfo() previously accepted null bytes within *host* and *port* parameters which can cause the values to be silently truncated.

CVSS

No CVSS.

References

Link	Resource
https://github.com/python/cpython/commit/131a3a66c5f400b588f9fd2732a5ed4e89623ee3
https://github.com/python/cpython/issues/160898
https://github.com/python/cpython/pull/160899
https://mail.python.org/archives/list/security-announce@python.org/thread/HCHE62VYTPYI6WOPJQDWUBR4CINBPSM7/
http://www.openwall.com/lists/oss-security/2026/10/29/4

Configurations

No configuration.

History

30 Oct 2026, 01:16

Type	Values Removed	Values Added
References		() https://github.com/python/cpython/commit/131a3a66c5f400b588f9fd2732a5ed4e89623ee3 -

29 Oct 2026, 21:17

Type	Values Removed	Values Added
References		() http://www.openwall.com/lists/oss-security/2026/10/29/4 -

29 Oct 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-29 18:17

Updated : 2026-10-30 18:17

NVD link : CVE-2026-116566

Mitre link : CVE-2026-116566

CVE.ORG link : CVE-2026-116566

JSON object : View

Products Affected

No product.

CWE

CWE-158

Improper Neutralization of Null Byte or NUL Character

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