CVE-2026-30404 in wgcloud
Summary
by MITRE • 03/19/2026
The backend database management connection test feature in wgcloud v3.6.3 has a server-side request forgery (SSRF) vulnerability. This issue can be exploited to make the server send requests to probe the internal network, remotely download malicious files, and perform other dangerous operations.
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Analysis
by VulDB Data Team • 03/24/2026
The vulnerability identified as CVE-2026-30404 affects the wgcloud v3.6.3 application, specifically targeting its backend database management connection test functionality. This represents a critical server-side request forgery vulnerability that allows remote attackers to manipulate the application's internal network communication capabilities. The flaw exists within the application's handling of database connection test requests, where input validation and sanitization mechanisms fail to properly restrict the URLs or endpoints that can be accessed through the testing feature.
The technical implementation of this vulnerability stems from insufficient validation of user-supplied input parameters used in the database connection testing process. When administrators or authorized users attempt to test database connectivity through the web interface, the application accepts external input without proper sanitization or restriction. This allows an attacker to craft malicious requests that bypass normal network boundaries and potentially access internal services that should remain isolated from external network access. The vulnerability operates at the application layer and specifically targets the HTTP request handling mechanism used for database connectivity verification.
The operational impact of this vulnerability extends beyond simple network probing capabilities. Attackers can leverage this SSRF flaw to perform remote code execution by downloading malicious payloads from internal network resources, accessing internal databases, or exploiting other vulnerable internal services. The vulnerability enables attackers to conduct reconnaissance activities against internal network infrastructure, potentially leading to further compromise of the internal environment. This represents a significant risk to organizations relying on wgcloud for network management, as it provides an attack vector that can bypass traditional network security controls and access internal systems that are typically protected by firewalls and network segmentation.
Organizations affected by this vulnerability should implement immediate mitigations including input validation and sanitization of all parameters used in the database connection testing feature, implementing proper network segmentation to isolate database management functions, and restricting access to the application's administrative interfaces. The vulnerability aligns with CWE-918, which specifically addresses server-side request forgery flaws, and maps to ATT&CK technique T1190 for exploiting vulnerabilities in web applications. Additionally, organizations should consider implementing web application firewalls to monitor and block suspicious requests, conducting regular security assessments of network management applications, and ensuring that all database connection testing features properly validate and sanitize all user inputs to prevent unauthorized access to internal resources.