CVE-2026-7004 in SynApps Runtime
Summary
by MITRE • 10/30/2026
WIT SynApps Runtime through 1.4.11 contains a pre-authentication reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject and execute arbitrary JavaScript by submitting a crafted LINK query parameter to the /System/Session-1 endpoint. Attackers can exploit this flaw to harvest credentials, manipulate the login flow, access browser-visible data, and perform same-origin requests to controller endpoints, including an origin-switch primitive against the internal controller in Cloud RIA scenarios.
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Analysis
by VulDB Data Team • 10/30/2026
The vulnerability identified within WIT SynApps Runtime versions up to 1.4.11 represents a critical pre-authentication reflected cross-site scripting flaw located at the /System/Session-1 endpoint. This security defect allows unauthenticated actors to inject malicious JavaScript payloads directly into HTTP responses by manipulating the LINK query parameter. Because the vulnerability exists prior to any authentication mechanism, it does not require valid credentials or user interaction beyond visiting a crafted URL, significantly lowering the barrier for exploitation. The reflected nature of this XSS means that the injected script is immediately executed in the victim's browser context upon loading the compromised page, creating an immediate and direct attack surface against users accessing the application through standard web browsers.
From a technical perspective, the flaw stems from insufficient input validation or output encoding on the server side when processing the LINK parameter. When this parameter contains specially crafted script tags or event handlers, the runtime fails to sanitize these inputs before reflecting them back in the HTTP response body. This failure allows arbitrary JavaScript code to run with the privileges of the logged-in user if they are authenticated at that moment, or as an anonymous guest if no session exists yet. The ability to execute scripts in this context enables attackers to perform a wide range of malicious activities including credential harvesting by stealing cookies and local storage data, manipulating the login flow to bypass security controls, and accessing sensitive browser-visible information stored within the application interface.
The operational impact extends beyond simple script execution due to the specific capabilities enabled by same-origin requests against controller endpoints. In Cloud RIA scenarios, this vulnerability provides an origin-switch primitive that allows attackers to interact with internal controllers as if they were originating from a trusted source. This capability can be leveraged to perform unauthorized actions on behalf of victims, such as modifying application state or accessing restricted resources without proper authorization checks. The combination of pre-authentication access and the ability to switch origins effectively neutralizes many traditional security boundaries that rely on origin validation for internal service communication, thereby compromising both confidentiality and integrity of the web application environment.
This vulnerability aligns with CWE-79 Improper Neutralization of Input During Web Page Generation commonly known as Cross-site Scripting in industry classification standards. Furthermore, it maps to MITRE ATT&CK technique T1059 Command and Control via Application Layer Protocol when considering the potential for establishing persistent access or exfiltrating data through crafted requests. The pre-authentication aspect also relates to CWE-287 Improper Authentication as the system fails to verify identity before processing sensitive input parameters that lead to code execution. Security professionals should treat this as a high-severity issue requiring immediate remediation due to its ease of exploitation and broad impact potential across authenticated and unauthenticated user sessions alike.
Mitigation strategies must focus on implementing robust input validation and output encoding mechanisms for all query parameters, particularly those processed by session management endpoints like /System/Session-1. Developers should ensure that any data reflected in HTTP responses is properly encoded to prevent browser interpretation as executable code. Additionally, deploying a Web Application Firewall with rules specifically targeting XSS patterns can provide an additional layer of defense while patches are being developed and deployed. It is also recommended to implement strict Content Security Policy headers to restrict the sources from which scripts can be loaded or executed, thereby limiting the impact even if injection occurs. Regular security audits and penetration testing should be conducted to identify similar flaws in other endpoints that may share this architectural weakness within the SynApps Runtime framework.