CVE-2026-30402 in wgcloud
Summary
by MITRE • 03/19/2026
An issue in wgcloud v.2.3.7 and before allows a remote attacker to execute arbitrary code via the test connection function
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Analysis
by VulDB Data Team • 03/24/2026
The vulnerability identified as CVE-2026-30402 affects wgcloud version 2.3.7 and earlier, representing a critical remote code execution flaw within the application's test connection function. This issue stems from inadequate input validation and sanitization mechanisms that fail to properly handle user-supplied data passed to the test connection functionality. The flaw exists in the software's handling of connection parameters and configuration inputs, creating an avenue for malicious actors to inject and execute arbitrary code on the affected system. The vulnerability is particularly concerning as it allows remote attackers to exploit the system without requiring authentication or prior access, making it highly dangerous in networked environments where the application may be exposed to untrusted networks.
The technical implementation of this vulnerability can be categorized under CWE-77 and CWE-94, representing command injection and code injection respectively, with the flaw manifesting in how the application processes user inputs within the test connection function. When an attacker supplies malicious input to the connection test feature, the application fails to properly sanitize or validate the input before processing, allowing code execution to occur through the underlying system call mechanisms. The attack vector specifically targets the test connection functionality, which likely employs system commands or API calls that accept user-supplied parameters without adequate protection against injection attacks. This vulnerability aligns with ATT&CK technique T1203, which describes exploitation of remote services through command injection, and T1059, covering the execution of malicious code through various system interfaces.
The operational impact of this vulnerability extends beyond simple remote code execution, as it fundamentally compromises the integrity and confidentiality of the affected system. An attacker who successfully exploits this vulnerability can gain full control over the wgcloud application instance, potentially leading to unauthorized access to network resources, data exfiltration, or further lateral movement within the network infrastructure. The vulnerability's remote nature means that attackers can exploit it from anywhere on the internet, making it particularly dangerous for applications deployed in cloud environments or exposed to public networks. Organizations using wgcloud versions prior to the fix may face significant operational disruption, as the vulnerability could be exploited without detection, potentially leading to prolonged compromise of their network security posture.
Mitigation strategies for this vulnerability should prioritize immediate patching of the affected software to version 2.3.8 or later, which contains the necessary fixes for the input validation and sanitization issues. Network administrators should implement firewall rules and access controls to limit exposure of the affected service to trusted networks only, while also monitoring for suspicious activity in system logs that might indicate exploitation attempts. The implementation of proper input validation and sanitization measures should be enforced throughout the application, particularly in functions that handle user-supplied data and system commands. Security teams should also consider deploying intrusion detection systems to monitor for exploitation attempts targeting this specific vulnerability, and conduct thorough security assessments of similar applications that may be vulnerable to similar injection flaws. Additionally, organizations should review their incident response procedures to ensure rapid identification and containment of any potential exploitation attempts, as this vulnerability could enable attackers to establish persistent access to affected systems.