---
id: CVE-2026-109356
title: >-
  LibreNMS before 26.9.0 contains a missing authorization vulnerability in
  PortsController::purge that allows global-read users to physically delete
  ports without delete privileges
summary: >-
  LibreNMS before 26.9.0 contains a missing authorization vulnerability in
  PortsController::purge that allows global-read users to physically delete
  ports without delete privileges. Attackers with read-only accounts can send
  DELETE request…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-862
published: '2026-10-12'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T17:17:32.870'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109356'
references:
  - url: >-
      https://github.com/librenms/librenms/security/advisories/GHSA-9qcg-rgg9-mpjg
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/librenms-before-26.9.0-missing-authorization-in-port-purge-via-portscontroller
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-12T18:00:08.212Z'
---

## Overview

LibreNMS before 26.9.0 contains a missing authorization vulnerability in PortsController::purge that allows global-read users to physically delete ports without delete privileges. Attackers with read-only accounts can send DELETE requests to /ports/purge, using purge=all to irreversibly erase every deleted port on all visible devices.

## Remediation

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