The vulnerability in the LibreNMS network monitoring system’s `sceenario/include/html/print-vrf.inc.php` file allows a intruder to perform cross-site scripting attacks.

The vulnerability of the LibreNMS network monitoring system’s sceenario/include/html/print-vrf.inc.php file is related to deficiencies in the encapsulation process when processing fields such as vrfname, mplsVpnVrfDescription, and mplsVpnVrfRoute. Exploiting this vulnerability allows a remote...

Cross-site Scripting (XSS)

Overview librenms/librenms is a fully featured network monitoring system that provides a wealth of features and device support. Affected versions of this package are vulnerable to Cross-site Scripting XSS in the rendering of SNMP VRF fields such as mplsVpnVrfDescription, vrfname, and...

CVE-2026-84191: Improper Neutralization of Input During Web Page Generation

LibreNMS before 26.5.0 contains stored cross-site scripting vulnerabilities in VRF display pages where mplsVpnVrfDescription, vrfname, and mplsVpnVrfRouteDistinguisher fields from SNMP polling are rendered without sanitization. Attackers controlling a monitored network device can inject arbitrary...