CVE-2025-6698 is a cross-site scripting (XSS) vulnerability identified in version 3.4.0 of the LabRedesCefetRJ WeGIA software. The vulnerability resides in the /html/matPat/adicionar_tipoSaida.php file, specifically within the 'Adicionar tipo' component. The flaw arises from improper sanitization or validation of the input parameter labeled 'Insira o novo tipo,' which allows an attacker to inject malicious scripts. This vulnerability can be exploited remotely without requiring authentication, although user interaction is necessary to trigger the malicious payload. The CVSS 4.0 base score is 5.1, indicating a medium severity level. The attack vector is network-based with low attack complexity and no privileges required, but user interaction is needed to execute the attack. The vulnerability impacts the confidentiality and integrity of the affected system by enabling script injection, which could lead to session hijacking, defacement, or redirection to malicious sites. The vendor was notified early but has not responded or provided a patch, and no known exploits are currently observed in the wild. The public disclosure of the vulnerability increases the risk of exploitation by attackers. Given that the vulnerability affects a specific component and version, organizations using WeGIA 3.4.0 should consider this a significant security concern requiring prompt attention.

For European organizations utilizing LabRedesCefetRJ WeGIA 3.4.0, this vulnerability poses a risk primarily to web application security. Successful exploitation could allow attackers to execute arbitrary scripts in the context of legitimate users, potentially leading to theft of session tokens, user impersonation, unauthorized actions, or distribution of malware through the compromised web interface. This could result in data breaches, loss of user trust, and compliance violations under GDPR if personal data is exposed or manipulated. The medium severity rating suggests moderate impact; however, the lack of vendor response and patch availability increases the risk exposure. Organizations in sectors with high reliance on web applications, such as education, research, or public administration, where WeGIA might be deployed, could face operational disruptions or reputational damage. Additionally, the need for user interaction means phishing or social engineering could be used to trigger the exploit, increasing the attack surface.

1. Immediate mitigation should include implementing input validation and output encoding on the 'Insira o novo tipo' parameter to neutralize malicious scripts. If source code access is available, developers should sanitize inputs using established libraries or frameworks that prevent XSS. 2. Deploy Web Application Firewalls (WAFs) with rules targeting common XSS attack patterns to detect and block exploit attempts. 3. Conduct user awareness training to recognize and avoid suspicious links or inputs that could trigger the vulnerability. 4. Monitor web application logs for unusual activities or repeated attempts to exploit the vulnerable parameter. 5. If possible, isolate or restrict access to the vulnerable component until a vendor patch or official fix is released. 6. Regularly update and patch all components of the WeGIA software once vendor support resumes or community patches become available. 7. Consider implementing Content Security Policy (CSP) headers to limit the execution of unauthorized scripts in the browser context. 8. Engage in vulnerability scanning and penetration testing focused on XSS to identify and remediate similar issues proactively.