CVE-2026-109354

MEDIUMCVSS 4.3

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.

Timeline

Published:October 12th, 2026 5:17 PM

Last modified:October 15th, 2026 8:33 PM

CVSS Scoring

CVSS v3: 4.3 (MEDIUM)

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Weaknesses (CWE)

CWE-22

References & Reports

Advisories, patches, and third-party reports

https://github.com/librenms/librenms/security/advisories/GHSA-j3qf-h24w-9f42
https://www.vulncheck.com/advisories/librenms-before-26.9.0-path-traversal-via-nfsen-channel-parameter

Source: NIST NVD · Data may lag official sources by up to one minute