CVE-2026-109355 [MEDIUM] – LibreNMS before 26.9.0 contains a stored cross-site scripting vulnerability in get_oxidize

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.