{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "23.10.0"
              },
              {
                "fixed": "26.4.0"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "c22b74d46b307979a5b6a28b1a3a54e68b3152c4"
            },
            {
              "fixed": "5e70937c141d494b54215c973a62ec0fd9e3543a"
            }
          ],
          "repo": "https://github.com/librenms/librenms",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-wff2-9gjr-95f3"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-78"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84194.json"
  },
  "details": "LibreNMS versions \u003e= 23.10.0 and \u003c 26.2.0 (fixed in 26.4.0) contain an authenticated OS command injection vulnerability in libvirt discovery. When libvirt support is enabled (enable_libvirt=true), the device hostname ($this-\u003egetDevice()-\u003ehostname) is concatenated into shell commands (ssh, virsh list/dumpxml/domstate) in VminfoLibvirt.php and passed to exec() without escapeshellarg() or argument separation. An authenticated admin can set a crafted device hostname to inject arbitrary OS commands, leading to remote code execution in the discovery worker context.",
  "id": "CVE-2026-84194",
  "modified": "2026-09-04T11:31:05.573358324Z",
  "published": "2026-09-01T11:33:57.794Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84194.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/librenms/librenms/security/advisories/GHSA-wff2-9gjr-95f3"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84194"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/librenms-23.10.0-before-26.4.0-os-command-injection-via-hostname"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L",
      "type": "CVSS_V4"
    }
  ],
  "summary": "LibreNMS 23.10.0 before 26.4.0 OS Command Injection via Hostname"
}