Python < 3.11.18 / 3.12.x < 3.12.16 / 3.13.x < 3.13.18 / 3.14.x < 3.14.10 / 3.15.x < 3.15.2 / 3.16.x < 3.16.0 Multiple Vulnerabilities

critical Nessus Plugin ID 373609

Synopsis

The remote host has an application installed that is affected by multiple vulnerabilities.

Description

The version of Python installed on the remote Windows host is prior to 3.11.18, or is 3.12.x prior to 3.12.16, or 3.13.x prior to 3.13.18, or 3.14.x prior to 3.14.10, or 3.15.x prior to 3.15.2, or 3.16.x prior to 3.16.0. It is, therefore, affected by multiple vulnerabilities:

- tarfile.tar_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. This allowed a malicious tar archive to cause tarfile.extractall() with the 'tar' filter to write files outside the destination directory, subject to the permissions of the extracting process. (CVE-2026-114583)

- Python has added a denylist for known compromised certificates to the 'ssl' module to ensure user safety even without certificate revocation configured. Known compromised certificates will automatically be rejected regardless of the SSLContext policy configuration. (CVE-2026-115557)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Python 3.11.18, 3.12.16, 3.13.18, 3.14.10, 3.15.2, 3.16.0 or later.

Plugin Details

Severity: Critical

ID: 373609

File Name: python_cve_2026_114583.nasl

Version: 1.1

Type: Local

Agent: windows

Family: Windows

Published: 10/29/2026

Updated: 10/29/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 92.98

CVSS v2

Risk Factor: Critical

Base Score: 10

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

CVSS Score Source: CVE-2026-115557

CVSS v3

Risk Factor: High

Base Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v4

Risk Factor: Critical

Base Score: 9.4

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

Vulnerability Information

CPE: cpe:/a:python:python

Required KB Items: SMB/Registry/Enumerated, installed_sw/Python Software Foundation Python

Patch Publication Date: 10/24/2026

Vulnerability Publication Date: 10/22/2026

Reference Information

CVE: CVE-2026-114583, CVE-2026-115557

CWE: 299

Detections

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