{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "26.9.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "dbe6014c1a0736da12b5f6114d7577c7a9dd136e"
            }
          ],
          "repo": "https://github.com/librenms/librenms",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-j3qf-h24w-9f42"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-22"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109354.json"
  },
  "details": "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.",
  "id": "CVE-2026-109354",
  "modified": "2026-10-17T02:30:34.207230750Z",
  "published": "2026-10-12T16:05:35.816Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109354.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/librenms/librenms/security/advisories/GHSA-j3qf-h24w-9f42"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-109354"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/librenms-before-26.9.0-path-traversal-via-nfsen-channel-parameter"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "LibreNMS before 26.9.0 Path Traversal via NFSen channel Parameter"
}