CVE-2026-2728

LibreNMS versions before 26.3.0 are affected by an authenticated Cross-site Scripting vulnerability on the showconfig page. Successful exploitation requires administrative privileges. Exploitation could result in XSS attacks being performed against other users with access to the page.

More information : https://projectblack.io/blog/librenms-authenticated-rce-and-xss/#xss-on-showconfig-page-2630