Debian dla-4600 : python3-django-postorius - security update

medium Nessus Plugin ID 316849

Synopsis

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

Description

The remote Debian 11 host has a package installed that is affected by a vulnerability as referenced in the dla-4600 advisory.

------------------------------------------------------------------------- Debian LTS Advisory DLA-4600-1 [email protected] https://www.debian.org/lts/security/ Daniel Leidert May 25, 2026 https://wiki.debian.org/LTS
-------------------------------------------------------------------------

Package : postorius Version : 1.3.4-2+deb11u2 CVE ID : CVE-2026-44742 Debian Bug : 1136003

A vulnerability has been discovered in postorius, a web user interface to access GNU Mailman3.

CVE-2026-44742

If an email is sent to a mailing list with a subject containing HTML code and placed in Held messages, the HTML code is rendered without escaping in the title of the Held messages pop-up leading to a Cross-site Scripting (XSS) vulnerability..

For Debian 11 bullseye, this problem has been fixed in version 1.3.4-2+deb11u2.

We recommend that you upgrade your postorius packages.

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

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS Attachment:
signature.asc Description: This is a digitally signed message part

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-django-postorius packages.

Plugin Details

Severity: Medium

ID: 316849

File Name: debian_DLA-4600.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 5/26/2026

Updated: 5/26/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3.8

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2026-44742

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.3

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

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

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, p-cpe:/a:debian:debian_linux:python3-django-postorius

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/25/2026

Vulnerability Publication Date: 5/7/2026

Reference Information

CVE: CVE-2026-44742

Detections

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