There is a MEDIUM severity vulnerability affecting CPython. socket.getaddrinfo() previously accepted null bytes within *host* and *port* parameters which can cause the values to be silently truncated.
Please see the linked CVE ID for the latest information on affected versions: * https://www.cve.org/CVERecord?id=CVE-2026-116566 * https://github.com/python/cpython/pull/160899
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