Detections
Analytics

Python < 3.10.22 / 3.11.x < 3.11.17 / 3.12.x < 3.12.15 / 3.13.x < 3.13.16 / 3.14.x < 3.14.0b1 Link Following

high Nessus Plugin ID 373610

Synopsis

The remote host has an application installed that is affected by a link following vulnerability.

Description

The version of Python installed on the remote Windows host is prior to 3.10.22, or is 3.11.x prior to 3.11.17, or 3.12.x prior to 3.12.15, or 3.13.x prior to 3.13.16, or 3.14.x prior to 3.14.0b1. It is, therefore, affected by a link following vulnerability. In CPython 3.13 and earlier, the tarfile module's data and tar extraction filters are vulnerable to crafted archives containing a hard link to a symbolic link. Such archives may cause extraction to modify the permissions or modification time of a file outside the destination directory, or expose the contents of that file within the extracted tree.

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 3.10.22, 3.11.17, 3.12.15, 3.13.16, 3.14.0b1 or later.

See Also

https://github.com/python/cpython/issues/157190

https://github.com/python/cpython/pull/157191

http://www.nessus.org/u?74c00ac7

Plugin Details

Severity: High

ID: 373610

File Name: python_cve_2026_82049.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: 4.3

Percentile: 53.55

CVSS v2

Risk Factor: High

Base Score: 9.4

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

CVSS Score Source: CVE-2026-82049

CVSS v3

Risk Factor: High

Base Score: 8.1

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

CVSS v4

Risk Factor: High

Base Score: 8.4

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

Vulnerability Information

CPE: cpe:/a:python:python

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

Patch Publication Date: 9/14/2026

Vulnerability Publication Date: 9/14/2026

Reference Information

CVE: CVE-2026-82049

CWE: 59