CVE-2025-62412 LibreNMS alert-rules Cross-Site Scripting Vulnerability
Attackers can inject malicious HTML into alert rule names in LibreNMS, potentially leading to session hijacking or code execution.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-62412?
CVE-2025-62412 is a low-severity cross-site scripting vulnerability in Librenms Librenms, published on 16 Oct 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
LibreNMS is a community-based GPL-licensed network monitoring system. The alert rule name in the Alerts > Alert Rules page is not properly sanitized, and can be used to inject HTML code. This vulnerability is fixed in 25.10.0.
Weakness: CWE-79
Which versions are affected by CVE-2025-62412?
2 open source packages ship an affected version, including librenms/librenms. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
librenms/librenms Packagist | All versions | 25.10.0 |
librenms/librenms Packagist | All versions | 25.10.0 |
Products include Librenms Librenms.
How do I fix CVE-2025-62412?
Upgrade librenms/librenms to 25.10.0 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-62412 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-62412 exists.
Other vulnerabilities in Librenms Librenms
Sources
Also known as GHSA-6g2v-66ch-6xmh.