---
id: CVE-2026-52817
title: >-
  Linuxfabrik Monitoring Plugins provides monitoring plugins for Icinga, Nagios,
  and related systems
summary: >-
  Linuxfabrik Monitoring Plugins provides monitoring plugins for Icinga, Nagios,
  and related systems. Prior to version 5.1.0, the shipped
  assets/sudoers/Debian.sudoers policy allowed the nagios or icinga account to
  execute /usr/bin/apt-get…
severity: high
cwe:
  - CWE-88
vendor: linuxfabrik-lib
product: linuxfabrik-lib
affected:
  - linuxfabrik-lib <= 5.0.0
patched:
  - linuxfabrik-lib 5.1.0
published: '2026-08-18'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:13:25.910'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-52817'
references:
  - url: >-
      https://github.com/Linuxfabrik/monitoring-plugins/blob/main/CHANGELOG.md#v510---2026-05-30
    label: security-advisories@github.com
  - url: >-
      https://github.com/Linuxfabrik/monitoring-plugins/commit/694b5daeebadc9a51428f3de1acff7b1f737642f
    label: security-advisories@github.com
  - url: 'https://github.com/Linuxfabrik/monitoring-plugins/releases/tag/v5.1.0'
    label: security-advisories@github.com
  - url: >-
      https://github.com/Linuxfabrik/monitoring-plugins/security/advisories/GHSA-8w6w-23mq-h8rg
    label: security-advisories@github.com
  - url: >-
      https://github.com/Linuxfabrik/monitoring-plugins/security/advisories/GHSA-8w6w-23mq-h8rg
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://github.com/advisories/GHSA-8w6w-23mq-h8rg'
tags:
  - nvd
  - ghsa
  - pip
epss: 0.0018
epssPercentile: 0.06661
ecosystem: pip
ingestedAt: '2026-07-02T20:42:45.646Z'
---

## Overview

Linuxfabrik Monitoring Plugins provides monitoring plugins for Icinga, Nagios, and related systems. Prior to version 5.1.0, the shipped assets/sudoers/Debian.sudoers policy allowed the nagios or icinga account to execute /usr/bin/apt-get as root without restricting its arguments. An attacker who already controls that monitoring account can supply the APT::Update::Pre-Invoke option to execute an arbitrary command while apt-get runs with root privileges, resulting in a root shell and complete compromise of the host. The vulnerable rule supports the check-plugins/deb-updates/deb-updates plugin, but it authorized arbitrary apt-get argument sequences rather than only the required apt-get update --quiet 2 command. This issue is fixed in version 5.1.0.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-52817)

Affected packages:

- `linuxfabrik-lib <= 5.0.0`

Patched in:

- `linuxfabrik-lib 5.1.0`

Source: https://github.com/advisories/GHSA-8w6w-23mq-h8rg