medium4.8
CVE-2026-2728
LibreNMS versions before 26.3.0 are affected by an authenticated Cross-site Scripting vulnerability on the showconfig page.
Impact
LibreNMS versions before 26.3.0 are affected by an authenticated Cross-site Scripting vulnerability on the showconfig page. Successful exploitation requires administrative privileges. Exploitation could result in XSS attacks being performed against other users with access to the page.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | librenms/librenms | >= 25.12.0, < 26.3.0 | 26.3.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Librenms | Librenms | before 26.3.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-5gm9-622f-qcg5
- https://github.com/librenms/librenms/security/advisories/GHSA-5gm9-622f-qcg5
- https://github.com/librenms/librenms/releases/tag/26.3.0
- https://projectblack.io/blog/librenms-authenticated-rce-and-xss/#xss-on-showconfig-page-2630