CVE-2026-2728: Librenms

Medium severity, CVSS 4.8. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Librenms Librenms: before 26.3.0 (fixed in 26.3.0)

Published 2026-04-13. Last modified 2026-06-17.