Debian dla-4832 : nagios4 - security update

high Nessus Plugin ID 365334

Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4832 advisory.

- ------------------------------------------------------------------------- Debian LTS Advisory DLA-4832-1 [email protected] https://www.debian.org/lts/security/ Russell Stuart October 13, 2026 https://wiki.debian.org/LTS
- -------------------------------------------------------------------------

Package : nagios4 Version : 4.4.6-4+deb12u2 CVE ID : CVE-2026-48549 CVE-2026-48550 CVE-2026-48551 CVE-2026-48552 CVE-2026-48553 CVE-2026-48554

Multiple security vulnerabilities were discovered in the Nagios monitoring system, which could result in cross-site request forgery, cross-site scripting or the execution of arbitrary commands.

For Debian 12 bookworm, these problems have been fixed in version 4.4.6-4+deb12u2.

We recommend that you upgrade your nagios4 packages.

For the detailed security status of nagios4 please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/nagios4

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

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

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

Solution

Upgrade the nagios4 packages.

Plugin Details

Severity: High

ID: 365334

File Name: debian_DLA-4832.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 10/13/2026

Updated: 10/13/2026

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.7

CVSS v2

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.1

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

CVSS Score Source: CVE-2026-48552

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

CVSS Score Source: CVE-2026-48554

CVSS v4

Risk Factor: High

Base Score: 7.7

Threat Score: 5.2

Threat Vector: CVSS:4.0/E:U

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

CVSS Score Source: CVE-2026-48554

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:12.0, p-cpe:/a:debian:debian_linux:nagios4-cgi, p-cpe:/a:debian:debian_linux:nagios4-common, p-cpe:/a:debian:debian_linux:nagios4-core, p-cpe:/a:debian:debian_linux:nagios4

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/13/2026

Vulnerability Publication Date: 8/12/2026

Reference Information

CVE: CVE-2026-48549, CVE-2026-48550, CVE-2026-48551, CVE-2026-48552, CVE-2026-48553, CVE-2026-48554

Detections

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