CVE-2026-104080
Received Received - Intake

OS Command Injection in Control Web Panel

Publication date: 2026-11-02

Last updated on: 2026-11-02

Assigner: VulnCheck

Description
Control Web Panel (CWP) before webpanel_version 1.30 contains an OS command injection vulnerability in the loopback API /valid_token/ route that allows unauthenticated attackers to execute arbitrary commands as root by injecting shell metacharacters into the unvalidated 'user' parameter. Attackers can send a crafted request to the /valid_token/ route, which passes the parameter unescaped into a shell_exec() call.

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Meta Information

Published
2026-11-02
Last Modified
2026-11-02
Generated
2026-11-02
AI Q&A
2026-11-02
EPSS Evaluated
N/A
NVD
CVE-2026-104080

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Control Web Panel Control Web Panel 0

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Exploitability

CWE
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KEV
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CWE ID Description
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.

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Executive Summary

Control Web Panel (CWP) before version 1.30 has an OS command injection flaw in the /valid_token/ route of its loopback API. Unauthenticated attackers can exploit this by injecting shell metacharacters into the 'user' parameter, which is passed unescaped into a shell_exec() call, allowing arbitrary root command execution.

Detection Guidance

To detect this vulnerability, check if your Control Web Panel (CWP) version is below 1.30. You can verify the installed version by running: cat /usr/local/cwpsrv/var/services/user_build or checking the web panel interface. Additionally, monitor network traffic for suspicious requests to the /valid_token/ route with shell metacharacters in the 'user' parameter.

Impact Analysis

Attackers can gain full root access to the server running CWP, leading to complete system compromise. This includes stealing data, installing malware, disrupting services, or using the server for further attacks. All systems running vulnerable CWP versions are at risk.

Compliance Impact

This vulnerability likely violates compliance requirements for GDPR and HIPAA due to unauthorized root access enabling data breaches. GDPR mandates strict data protection, while HIPAA requires safeguarding protected health information. A successful exploit could result in severe legal and financial penalties.

Mitigation Strategies

Immediately update Control Web Panel to version 1.30 or later. If an update is not immediately available, disable the vulnerable /valid_token/ route by restricting access via firewall rules or web server configuration. Temporarily block external access to the route until patched.

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