CVE-2026-15734 in WGDashboard
Summary
by MITRE • 08/07/2026
A Server-Side Template Injection (SSTI) vulnerability in WGDashboard version 4.3.2 and earlier, allows authenticated attackers to execute arbitrary code as root.
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Analysis
by VulDB Data Team • 08/07/2026
Server-side template injection vulnerabilities represent a critical class of security flaws that occur when user-supplied data is directly incorporated into server-side templates without proper sanitization or validation. In the case of WGDashboard version 4.3.2 and earlier, this vulnerability manifests within the application's template processing mechanism where authenticated users can inject malicious template code that gets executed on the server. The flaw stems from inadequate input validation and sanitization practices during template rendering processes, allowing attackers to leverage template syntax to bypass normal execution boundaries. This particular vulnerability class maps directly to CWE-74 and CWE-94 within the Common Weakness Enumeration framework, specifically addressing weaknesses in template injection and code injection scenarios. The ATT&CK framework categorizes this under T1059.008 for Command and Scripting Interpreter and T1068 for Exploitation for Privilege Escalation, highlighting the potential for attackers to escalate privileges from authenticated user status to root access. The security implications are severe as authenticated attackers can exploit this vulnerability to execute arbitrary commands on the underlying system with the highest available privileges. This represents a critical privilege escalation vector that undermines the fundamental security model of the application and its hosting environment.
The technical exploitation of this SSTI vulnerability requires an authenticated session within the WGDashboard application, which significantly reduces the attack surface but does not eliminate the severity of impact. Attackers can construct malicious template payloads that leverage the specific templating engine used by WGDashboard to execute system commands or access underlying system resources. The injection typically occurs through parameters that are processed through server-side templates, where user input is directly rendered without proper escaping or validation. This allows attackers to manipulate the template execution flow to include their own code execution directives. The vulnerability's exploitation path demonstrates a clear privilege escalation from authenticated user to root access, making it particularly dangerous for systems where the web application runs with elevated privileges. The template injection occurs at the server level rather than in client-side components, meaning that successful exploitation results in complete system compromise rather than just data exposure or session hijacking.
The operational impact of this vulnerability extends far beyond simple code execution capabilities and represents a comprehensive breach of system integrity and confidentiality. When an attacker successfully exploits this SSTI vulnerability, they can execute arbitrary commands with root privileges, potentially leading to full system compromise, data exfiltration, lateral movement within the network, or persistence mechanisms establishment. The implications for organizations using affected WGDashboard versions are significant as this vulnerability allows attackers to gain complete control over the underlying infrastructure hosting the application. The attack vector requires authentication, which means that unauthorized access attempts would be blocked by standard authentication controls, but once authenticated, the attacker's privileges are effectively elevated beyond their intended scope. Organizations may face regulatory compliance violations, data breaches, and potential legal consequences depending on the nature of data processed by the affected system.
Mitigation strategies for this SSTI vulnerability must address both immediate remediation and long-term architectural improvements to prevent similar issues in the future. The primary recommendation involves upgrading to a patched version of WGDashboard that properly sanitizes user input before template processing, ensuring that all user-supplied data undergoes proper validation and escaping mechanisms. Organizations should implement strict input validation at multiple layers, including application-level filtering, template engine configuration hardening, and regular security code reviews focusing on template injection vulnerabilities. The implementation of web application firewalls and runtime protection mechanisms can help detect and block malicious template injection attempts. Additionally, organizations should establish comprehensive monitoring procedures to detect unusual command execution patterns or unauthorized system access attempts that might indicate exploitation of this vulnerability. Security teams should also conduct regular penetration testing and vulnerability assessments specifically targeting template processing components within their applications to identify similar weaknesses in other systems. The remediation process must include thorough testing of the patched version to ensure that legitimate functionality remains intact while eliminating the security vulnerability that allows for arbitrary code execution with root privileges.