CVE-2026-71966

Received Received - Intake

Authenticated Command Injection in CyberPanel Remote Backup Transfer

Publication date: 2026-08-10

Last updated on: 2026-08-10

Assigner: VulnCheck

Description

CyberPanel 2.4.3, fixed in commit eca0c3c, contains an authenticated command injection vulnerability in the remote backup transfer feature that allows authenticated attackers to execute arbitrary OS commands by controlling a remote server's API response. Attackers can inject malicious commands through a crafted directory name in the remote server's API response, which bypasses security middleware validation and is passed unsanitized to the OS command execution function.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-10

Last Modified

2026-08-10

Generated

2026-08-11

AI Q&A

2026-08-11

EPSS Evaluated

N/A

NVD

CVE-2026-71966

EUVD

EUVD-2026-55736

Affected Vendors & Products

Vendor	Product	Version / Range
cyberpanel	cyberpanel	2.4.3

Helpful Resources

Exploitability

CWE

KEV

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.

Attack-Flow Graph

Executive Summary

CyberPanel 2.4.3 has an authenticated command injection flaw in its remote backup transfer feature. Attackers with valid credentials can exploit this by manipulating a remote server's API response to inject malicious OS commands via a crafted directory name. The injected commands bypass security checks and execute directly on the system.

Detection Guidance

To detect this vulnerability, check if CyberPanel 2.4.3 is installed and if the remote backup transfer feature is enabled. Review logs for suspicious command execution patterns or unauthorized API responses from remote servers. No specific commands are provided in the context.

Impact Analysis

If you use CyberPanel 2.4.3, an attacker with valid credentials could take full control of your server by executing arbitrary commands. This could lead to data theft, system compromise, or further network infiltration. Updating to the patched version is critical to prevent exploitation.

Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, violating GDPR's integrity and confidentiality requirements or HIPAA's safeguards for protected health information. Organizations may face fines or penalties for non-compliance if exploited.

Mitigation Strategies

Immediately update CyberPanel to the fixed commit eca0c3c or a newer version. Disable the remote backup transfer feature if not required. Ensure all authenticated users have least privilege access and monitor for unusual command execution activities.

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