Debian dsa-6363 : python3-urllib3 - security update

high Nessus Plugin ID 322325

Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 13 host has a package installed that is affected by a vulnerability as referenced in the dsa-6363 advisory.

- ------------------------------------------------------------------------- Debian Security Advisory DSA-6363-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff June 23, 2026 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : python-urllib3 CVE ID : CVE-2026-44431

It was discovered that the urllib3 Python HTTP library didn't sanitise some cross-origin redirects, which could result in information disclosure.

For the stable distribution (trixie), this problem has been fixed in version 2.3.0-3+deb13u2.

We recommend that you upgrade your python-urllib3 packages.

For the detailed security status of python-urllib3 please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/python-urllib3

Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/

Mailing list: [email protected]

Tenable has extracted the preceding description block directly from the Debian security advisory.

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

Solution

Upgrade the python3-urllib3 packages.

Plugin Details

Severity: High

ID: 322325

File Name: debian_DSA-6363.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 6/24/2026

Updated: 6/24/2026

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.2

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2026-44431

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 8.2

Threat Score: 4.6

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:python3-urllib3, cpe:/o:debian:debian_linux:13.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 6/23/2026

Vulnerability Publication Date: 5/11/2026

Reference Information

CVE: CVE-2026-44431

Detections

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