Cross-site scripting in LibreNMS - CVE-2024-49764
Published: November 15, 2024 / Updated: May 5, 2026
Vulnerability identifier: #VU129729
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-2024-49764
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 another user's browser session.
The vulnerability exists due to cross-site scripting in librenms/includes/html/pages/device/capture.inc.php when rendering the "Capture Debug Information" page using a device hostname value. A remote privileged user can create a device with a specially crafted hostname parameter to execute arbitrary JavaScript in another user's browser session.
User interaction is required when the "Capture Debug Information" page for the device is visited, and non-httponly cookies may be exposed to an attacker-controlled domain.
How to mitigate CVE-2024-49764
Install security update from vendor's website.