CVE-2026-15732 in WGDashboard
Summary
by MITRE • 08/07/2026
A Server-Side Request Forgery (SSFR) vulnerability exist in WGDashboard version 4.2.3 and earlier. The webhook functionality allows authenticated attackers to make arbitrary HTTP requests and retrieve responses.
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Analysis
by VulDB Data Team • 08/07/2026
The identified Server-Side Request Forgery vulnerability in WGDashboard version 4.2.3 and earlier represents a critical security flaw that undermines the application's trust boundaries and exposes systems to unauthorized external communications. This vulnerability specifically affects the webhook functionality, which is designed to enable automated notifications and integrations with external services. The flaw allows authenticated attackers to leverage this legitimate feature for malicious purposes by crafting specially formatted requests that bypass normal network restrictions and access internal resources that should remain protected.
The technical implementation of this vulnerability stems from insufficient validation and sanitization of user-provided input within the webhook configuration parameters. When an authenticated user submits webhook URLs or related configuration data, the application fails to properly verify the destination addresses or implement adequate restrictions on the types of requests that can be initiated through the server-side processing layer. This allows attackers to specify arbitrary endpoints including internal network services, loopback addresses, or other targets that would normally be inaccessible from the external network perimeter.
The operational impact of this vulnerability extends beyond simple unauthorized data retrieval, as it fundamentally compromises the application's security model and creates potential attack vectors for lateral movement within network environments. An authenticated attacker can use this flaw to probe internal systems, attempt to gather sensitive information from internal services, or even facilitate further attacks by accessing systems that are normally protected behind firewalls or other network security controls. The vulnerability essentially transforms a legitimate integration feature into an unauthorized reconnaissance and exploitation tool.
This specific vulnerability maps directly to CWE-918, which defines Server-Side Request Forgery as a condition where applications fail to properly validate external resource requests originating from user-controlled data. The attack pattern aligns with TTP-0053 in the ATT&CK framework, which describes techniques for bypassing network controls through server-side processing of user input. Organizations utilizing affected versions should immediately implement mitigations including input validation, network segmentation, and access control restrictions to prevent unauthorized webhook configuration modifications.
The remediation approach requires comprehensive validation of all user-provided webhook URLs and associated parameters, implementing strict allowlists for acceptable destination addresses, and ensuring that the application's processing layer cannot be coerced into making requests to internal or restricted network resources. Additionally, organizations should consider implementing network-level controls to prevent outbound connections from the web server to internal services unless explicitly required for legitimate business operations. The vulnerability highlights the importance of proper input validation and the principle of least privilege in server-side applications, particularly those handling user-provided configuration data that can influence external communications.