CVE-2025-62412 json
LibreNMS alert-rules Cross-Site Scripting Vulnerability
published last yr. modified 21d ago also EUVD-2025-34819 , GHSA-6g2v-66ch-6xmh
- cvss
- 3.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 20%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- packagist librenms/librenms 25.10.0
- librenms librenms 25.10.0
Is CVE-2025-62412 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/librenms/librenms/security/advisories/GHSA-6g2v-66ch-6xmh referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 3.8 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N |
| GitHub | 3.1 | 3.8 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N |
| NVD | 3.1 | 4.8 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | librenms/librenms | <25.10.0 |
25.10.0 |
Affected products
- librenms librenms
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/librenms/librenms/commit/dccdf6769976a974d70f06a7ce8d5a846b29db6f
web, patch
-
github.com
/librenms/librenms/security/advisories/GHSA-6g2v-66ch-6xmh
exploit, web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2025-62412
advisory
-
github.com
/librenms/librenms
package
-
github.com
/librenms/librenms/releases/tag/25.10.0
web
Sources
- CVE List CVE-2025-62412
- GitHub Advisory GHSA-6g2v-66ch-6xmh
- NVD CVE-2025-62412
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.