CVE-2026-27016 LibreNMS has Stored XSS in Custom OID - unit parameter missing strip_tags()

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 24.10.0 through 26.1.1 are vulnerable to Stored XSS via the unit parameter in Custom OID. The Custom OID functionality lacks striptags sanitization while other fields name, oid, datatype are sanitized. The...

CVE-2026-26987

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 25.12.0 and below are vulnerable to Reflected XSS attacks via email field. This issue has been fixed in version 26.2.0...

PT-2025-4842 · Librenms · Librenms

Name of the Vulnerable Software and Affected Versions: Librenms versions up to 24.10.1 Description: The issue is a stored XSS that affects the parameter: ajax form.php - param: state. This allows remote attackers to inject malicious scripts, which execute immediately when a user views or interact...