Bug 2567573 (CVE-2026-82413)

Summary: CVE-2026-82413 ntopng: ntopng: Arbitrary command execution via command injection in scan scheduler
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerability-draftAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in ntopng. Insufficient input validation in the vulnerability scan scheduling endpoints allows shell metacharacters to be supplied in the scan ports parameter. An authenticated user, or an unauthenticated attacker if login is disabled, can exploit this issue to execute arbitrary operating system commands with the privileges of the ntopng service account when scheduled scans run.
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Description OSIDB Bzimport 2026-11-05 22:08:54 UTC 
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.