Path traversal in LibreNMS - #VU152692
Published: September 28, 2026
Vulnerability identifier: #VU152692
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to disclose traffic and NetFlow graph data from unauthorized devices.
The vulnerability exists due to path traversal in nfsen_channel_common.inc.php when processing the NFSen graph channel parameter. A remote user can submit a channel value containing directory traversal sequences to read RRD data for another device outside their authorized device scope.
Exploitation requires access to one NFSen-enabled device.
Affected software
LibreNMS
Remediation
Install security update from vendor's website.
LibreNMS - update to 26.9.0