Cross-site scripting in LibreNMS - CVE-2024-51494
Published: November 15, 2024 / Updated: May 5, 2026
Vulnerability identifier: #VU129728
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
CVE-ID: CVE-2024-51494
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: LibreNMS Project
Affected software:
LibreNMS
LibreNMS
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary JavaScript in the context of other users' sessions.
The vulnerability exists due to cross-site scripting in the Port Settings page in librenms/app/Http/Controllers/Table/EditPortsController.php when rendering the user-supplied "descr" parameter while editing a device's port settings. A remote privileged user can submit a specially crafted descr value to execute arbitrary JavaScript in the context of other users' sessions.
User interaction is required when the "Port Settings" page is visited.
How to mitigate CVE-2024-51494
Install security update from vendor's website.