Description
socket.getaddrinfo() previously accepted null bytes within *host* and *port* parameters which can cause the values to be silently truncated.
Published: 2026-10-29
Score: 5.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Fri, 30 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 30 Oct 2026 00:45:00 +0000


Thu, 29 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
References

Thu, 29 Oct 2026 20:15:00 +0000

Type Values Removed Values Added
First Time appeared Python
Python cpython
Python Software Foundation
Python Software Foundation cpython
Vendors & Products Python
Python cpython
Python Software Foundation
Python Software Foundation cpython

Thu, 29 Oct 2026 18:00:00 +0000

Type Values Removed Values Added
Description socket.getaddrinfo() previously accepted null bytes within *host* and *port* parameters which can cause the values to be silently truncated.
Title socket.getaddrinfo() accepts embedded null bytes in host and port
Weaknesses CWE-158
References
Metrics cvssV4_0

{'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'}


Subscriptions

Python Cpython
Python Software Foundation Cpython
cve-icon MITRE

Status: PUBLISHED

Assigner: PSF

Published:

Updated: 2026-10-30T17:18:15.574Z

Reserved: 2026-10-26T15:00:04.249Z

Link: CVE-2026-116566

cve-icon Vulnrichment

Updated: 2026-10-29T20:06:19.347Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-29T18:17:24.667

Modified: 2026-10-30T18:17:23.903

Link: CVE-2026-116566

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-29T20:00:29Z

Weaknesses