---
id: CVE-2026-109355
title: >-
  LibreNMS before 26.9.0 contains a stored cross-site scripting vulnerability in
  get_oxidized_nodes_list() that renders Oxidized API fields and SNMP sysName
  unescaped
summary: >-
  LibreNMS before 26.9.0 contains a stored cross-site scripting vulnerability in
  get_oxidized_nodes_list() that renders Oxidized API fields and SNMP sysName
  unescaped. Attackers controlling the Oxidized response or a device's SNMP
  sysName …
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
published: '2026-10-12'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T17:17:32.720'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109355'
references:
  - url: >-
      https://github.com/librenms/librenms/security/advisories/GHSA-cjqw-76mh-jmpv
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/librenms-before-26.9.0-stored-xss-via-tools-oxidized-node-list
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-12T18:00:08.212Z'
---

## Overview

LibreNMS before 26.9.0 contains a stored cross-site scripting vulnerability in get_oxidized_nodes_list() that renders Oxidized API fields and SNMP sysName unescaped. Attackers controlling the Oxidized response or a device's SNMP sysName can inject script that executes in browsers of users viewing the Tools Oxidized page.

## Remediation

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