Detections
Analytics

CVE-2026-116566

medium

Description

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

References

https://mail.python.org/archives/list/[email protected]/thread/HCHE62VYTPYI6WOPJQDWUBR4CINBPSM7/

https://github.com/python/cpython/pull/160899

https://github.com/python/cpython/issues/160898

https://github.com/python/cpython/commit/131a3a66c5f400b588f9fd2732a5ed4e89623ee3

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-113279

http://www.openwall.com/lists/oss-security/2026/10/29/4

Details

Source: Mitre, NVD

Published: 2026-10-29

Updated: 2026-10-30

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

CVSS v4

Base Score: 5.3

Vector: CVSS:4.0/AV:A/AC:L/AT:P/PR:H/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00259