CVE-2026-84189 | LibreNMS up to 26.4.0 Showconfig Page htmlspecialchars cross site scripting

September 1, 2026 Yanac

A vulnerability, which was classified as problematic, has been found in LibreNMS up to 26.4.0. This vulnerability affects the function htmlspecialchars of the component Showconfig Page. Performing a manipulation results in cross site scripting.

This vulnerability is reported as CVE-2026-84189. The attack is possible to be carried out remotely. No exploit exists.

It is advisable to upgrade the affected component.VulDB Recent EntriesRead More