Description
LibreNMS before 26.9.0 contains a path traversal vulnerability in nfsen_channel_common.inc.php that allows authenticated users to read unauthorized RRD data by injecting ../ sequences into the channel parameter. Attackers with access to one NFSen-enabled device can request graph.php with a traversed channel value to view traffic and NetFlow graphs of devices outside their authorized scope.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| librenms | librenms | < 26.9.0 | 26.9.0 |
References
- GitHub Security Advisory (GHSA-j3qf-h24w-9f42) vendor-advisory
- VulnCheck Advisory: LibreNMS before 26.9.0 Path Traversal via NFSen channel Parameter third-party-advisory