CVE-2025-40721 in Gateway
Summary
by MITRE • 07/08/2025
Reflected Cross-site Scripting (XSS) vulnerability in versions prior to 4.7.0 of Quiter Gateway by Quiter. This vulnerability allows an attacker to execute JavaScript code in the victim's browser by sending a malicious URL trhough the id_factura parameter in /FacturaE/listado_facturas_ficha.jsp.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 10/18/2025
The vulnerability CVE-2025-40721 represents a critical reflected cross-site scripting flaw in Quiter Gateway versions prior to 4.7.0, specifically affecting the /FacturaE/listado_facturas_ficha.jsp component. This vulnerability falls under CWE-79 which categorizes insecure direct object references and reflected cross-site scripting issues. The flaw manifests when the application fails to properly sanitize user input passed through the id_factura parameter, creating an avenue for malicious actors to inject arbitrary JavaScript code into the victim's browser context. The vulnerability is particularly concerning as it allows attackers to execute code directly within the user's browser session, potentially leading to session hijacking, credential theft, or further exploitation of the affected system.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding practices within the Quiter Gateway application. When a user navigates to the vulnerable endpoint with a maliciously crafted id_factura parameter, the application processes the input without sufficient sanitization measures, allowing malicious scripts to be reflected back to the user's browser. This reflected nature means that the attack payload is not stored on the server but rather injected through the request itself, making it particularly difficult to detect and prevent through traditional server-side security measures. The vulnerability specifically targets the listado_facturas_ficha.jsp page, indicating that the issue is localized to this particular module within the broader gateway framework.
The operational impact of this vulnerability extends beyond simple script execution, as it can be leveraged for sophisticated attack chains within the context of web application security. Attackers can craft malicious URLs that, when clicked by unsuspecting users, would execute malicious JavaScript code in their browser context, potentially leading to session theft, data exfiltration, or privilege escalation within the application. The reflected nature of the vulnerability means that attackers can deliver payloads through various vectors including phishing emails, social media links, or compromised websites, making it particularly dangerous in environments where users frequently interact with external content. This vulnerability directly impacts the confidentiality, integrity, and availability of the affected system, as it allows unauthorized code execution within legitimate user sessions.
Mitigation strategies for CVE-2025-40721 should prioritize immediate patching of the Quiter Gateway to version 4.7.0 or later, which contains the necessary security fixes. Organizations should implement comprehensive input validation and output encoding mechanisms to prevent similar vulnerabilities from occurring in other parts of their applications, adhering to the principles outlined in the OWASP Top Ten and the ATT&CK framework for web application security. The implementation of Content Security Policy headers, proper parameter sanitization, and regular security code reviews should be enforced across all web applications. Additionally, organizations should conduct thorough security assessments of their web applications to identify and remediate similar reflected XSS vulnerabilities, ensuring that all user-supplied inputs are properly validated and escaped before being processed or displayed within the application context.