Cross-site scripting in LibreNMS - #VU152693
Published: September 28, 2026
Vulnerability identifier: #VU152693
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: N/A
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary script in a victim's browser.
The vulnerability exists due to improper neutralization of input during web page generation in the Tools → Oxidized node list implemented by get_oxidized_nodes_list() when rendering Oxidized API fields and SNMP sysName values. A remote privileged user can inject crafted markup into these fields to execute arbitrary script in a victim's browser.
User interaction is required to view the affected node list.
Affected software
LibreNMS
Remediation
Install security update from vendor's website.
LibreNMS - update to 26.9.0