All vulnerabilities
CVE-2026-109355GHSA-cjqw-76mh-jmpv

LibreNMS before 26.9.0 Stored XSS via Tools Oxidized Node List

librenms librenms
Open in ThreatlineRecord JSON
CVSS
5.3Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.19%Chance of exploitation activity in the next 30 days, higher than 8% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in26.9.0Fixed versionCVE List
Published12 Oct 2026Updated 13 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

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.

Text from CVE List

Affected versions 2

  • librenmsaffected: all versions before 26.9.0CVE List
  • librenmsunaffected: 26.9.0CVE List

References 2