ntop ntopng up to 6.7.260716 Vulnerability Scan to_scan.lua nmap_scan_host scan_ports os command injection

Summaryinfo

A vulnerability classified as very critical was found in ntop ntopng up to 6.7.260716. Affected by this issue is the function nmap_scan_host of the file scripts/lua/rest/v2/add/host/to_scan.lua of the component Vulnerability Scan. The manipulation of the argument scan_ports results in os command injection. This vulnerability is identified as CVE-2026-82412. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in ntop ntopng up to 6.7.260716. It has been classified as very critical. Affected is the function nmap_scan_host of the file scripts/lua/rest/v2/add/host/to_scan.lua of the component Vulnerability Scan. The manipulation of the argument scan_ports with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

ntopng is a web-based network traffic monitoring application. Prior to 6.7.260717, the vulnerability-scan endpoints scripts/lua/rest/v2/add/host/to_scan.lua and scripts/lua/rest/v2/exec/host/schedule_vulnerability_scan.lua accept the scan_ports parameter without an administrator gate and pass it through validateSingleWord, which permits shell metacharacters. scripts/lua/modules/vulnerability_scan/vs_utils.lua then concatenates scan_ports into an nmap command in nmap_scan_host and executes the command through ntop.execCmd or ntop.execCmdAsync and popen. Any authenticated non-admin user can execute operating-system commands as the ntopng process account when nmap is available. Because the endpoints accept GET requests while ntopng's CSRF validation applies to POST request bodies, an attacker can also trigger the command through a logged-in user's browser without possessing ntopng credentials. This issue is fixed in version 6.7.260717.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-82412 since 08/29/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/21/2026). The MITRE ATT&CK project declares the attack technique as T1202.

Upgrading to version 6.7.260717 eliminates this vulnerability.

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Productinfo

Vendor

• ntop

Name

• ntopng

Version

• 6.7.260716

Website

• Product: https://github.com/ntop/ntopng/

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