Debian dsa-6161 : python3-multipart - security update

high Nessus Plugin ID 302009

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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-6161 advisory.

- ------------------------------------------------------------------------- Debian Security Advisory DSA-6161-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff March 12, 2026 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : multipart CVE ID : CVE-2026-28356

It was discovered that the parse_options_header() function of multipart, a Python multipart/form-data parser was susceptible to denial of service via malformed request headers or multipart/form-data streams.

For the stable distribution (trixie), this problem has been fixed in version 1.2.1-2+deb13u1.

We recommend that you upgrade your multipart packages.

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

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-multipart packages.

Plugin Details

Severity: High

ID: 302009

File Name: debian_DSA-6161.nasl

Version: 1.1

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 3/12/2026

Updated: 3/12/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-28356

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:python3-multipart, 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: 3/12/2026

Vulnerability Publication Date: 3/12/2026

Reference Information

CVE: CVE-2026-28356

Detections

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