{"id":"CVE-2026-82413","summary":"ntopng: authenticated (non-admin) OS command injection via the vulnerability-scan `scan_ports` parameter (`nmap` argument reaches `popen`)","details":"ntopng is a web-based network traffic monitoring application. Prior to 6.7.260717, scripts/lua/rest/v2/add/host/to_scan.lua and scripts/lua/rest/v2/exec/host/schedule_vulnerability_scan.lua accept scan_ports from any authenticated session, including non-administrator users, while deployments with login disabled expose the same request without authentication. The endpoints validate scan_ports with validateSingleWord, which permits shell metacharacters, and persist the value for the minute vulnerability-scan scheduler. The scheduler concatenates the value into an nmap command through nmap_scan_host and executes it through ntop.execCmd or ntop.execCmdAsync using popen. For the tcp_portscan and cve modules, a preliminary nmap -sn probe must first report the target as up before the attacker-controlled ports are used. When nmap is installed, this command injection allows arbitrary operating-system commands to execute as the ntopng service account without further user interaction. This issue is fixed in version 6.7.260717.","aliases":["GHSA-9xj6-f266-r46p"],"modified":"2026-11-05T21:32:27.354468050Z","published":"2026-11-05T16:04:14.697Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-77","CWE-78","CWE-88"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82413.json","unresolved_ranges":[{"extracted_events":[{"strategy":"StringRangeExpression","range":[{"fixed":"6.7.260717"}],"source":"AFFECTED_FIELD"}]},{"extracted_events":[{"range":[{"fixed":"6.7.260717"},{"fixed":"6.7.260717"}],"source":"DESCRIPTION"}]}]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82413.json"},{"type":"FIX","url":"https://github.com/ntop/ntopng/commit/fda269014c6a8a445c2c893cf9d2fad0128364a5"},{"type":"ADVISORY","url":"https://github.com/ntop/ntopng/security/advisories/GHSA-9xj6-f266-r46p"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-82413"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/ntop/ntopng","events":[{"introduced":"0"},{"fixed":"fda269014c6a8a445c2c893cf9d2fad0128364a5"}],"database_specific":{"extracted_events":[{"range":[{"fixed":"fda269014c6a8a445c2c893cf9d2fad0128364a5"}],"source":"REFERENCES_COMMIT"}]}}],"versions":["3.0","2.4"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-82413.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}