Cross-site scripting in LibreNMS - CVE-2025-47931
Published: April 24, 2026
Vulnerability identifier: #VU127445
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2025-47931
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary script in a victim's browser.
The vulnerability exists due to cross-site scripting in the poller group name parameter of the /poller/groups form when handling user-supplied poller group names. A remote user can create a poller group with a crafted group name to execute arbitrary script in a victim's browser.
The distributed poller feature must be enabled, and user interaction is required when another user visits the add host page.
Affected software
LibreNMS
How to mitigate CVE-2025-47931
Install security update from vendor's website.
LibreNMS - update to 25.5.0