{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "7.0.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "a0ca1268d84e0caf10442b9c7477d699b52d1c92"
            },
            {
              "fixed": "5f5a42c77f9d1acbd11c726603fcbf4e12e55654"
            }
          ],
          "repo": "https://github.com/linuxfabrik/monitoring-plugins",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-f54c-p5vg-mr5c"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-22",
      "CWE-269"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73973.json"
  },
  "details": "Linuxfabrik Monitoring Plugins provides monitoring plugins for Icinga, Nagios, and related systems. Prior to version 7.0.0, check-plugins/logfile/logfile accepted a free-form --filename path and opened it as root when invoked through the shipped nagios or icinga sudoers allowlist, without confining the resolved path to /var/log. An attacker who controls the monitoring account can select a root-readable file such as /etc/shadow and use --warning-regex . while leaving SUPPRESS_OUTPUT false, causing each nonempty line to be collected in warn_matches and returned through lib.base.oao(). The vulnerable flow passes the expanded scan_path directly to open(), and neither real-path containment nor an allowlist protects the sink. The same fix also confines mysql-logfile and openvpn-client-list paths, allows only documented log roots, and resolves symlinks and parent-directory traversal before checking containment. This issue is fixed in version 7.0.0.",
  "id": "CVE-2026-73973",
  "modified": "2026-09-11T03:30:25.764315352Z",
  "published": "2026-08-18T21:12:27.664Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Linuxfabrik/monitoring-plugins/blob/ae486fc629e1ca9373e1b6dd5e395603ee453bbc/CHANGELOG.md#v700---2026-08-14"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Linuxfabrik/monitoring-plugins/releases/tag/v7.0.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73973.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/Linuxfabrik/monitoring-plugins/security/advisories/GHSA-f54c-p5vg-mr5c"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73973"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Linuxfabrik/monitoring-plugins/commit/a0ca1268d84e0caf10442b9c7477d699b52d1c92"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Linuxfabrik Monitoring Plugins: Arbitrary root file disclosure via unconfined --filename in logfile plugin (sudoers LPE)"
}