CVE-2026-2728
Medium
Description
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.
SeverityMedium
CVSS4.8
Exploit probability—
ProductLibrenms
PublishedApr 13, 2026
First seenApr 13, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- librenms librenms26.3.0 or later
- librenms/librenms26.3.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| librenms librenms | v < 26.3.0 | 26.3.0 |
| librenms/librenmsPackagist | 25.12.0 ≤ v < 26.3.0 | 26.3.0 |
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