CVE-2025-62178 identifies a reflected Cross-Site Scripting (XSS) vulnerability in the WeGIA application, an open-source web management system focused on Portuguese language users. The vulnerability exists in versions prior to 3.5.1 within the /html/atendido/cadastro_atendido_parentesco_pessoa_nova.php endpoint. Specifically, the idatendido parameter is improperly sanitized, allowing attackers to inject malicious JavaScript code that is reflected back to the user’s browser. This type of vulnerability falls under CWE-79, which involves improper neutralization of input during web page generation. Successful exploitation requires the attacker to trick an authenticated user into clicking a crafted URL containing the malicious payload, as the CVSS vector indicates that privileges and user interaction are necessary. The impact primarily affects confidentiality and integrity by potentially exposing session tokens or enabling unauthorized actions through script execution in the victim’s context, but it does not affect system availability. The vulnerability has a CVSS v3.1 base score of 3.5, categorized as low severity. No public exploits have been reported yet, and the issue was published on October 13, 2025. The vendor has addressed the vulnerability in WeGIA version 3.5.1 by properly sanitizing the idatendido parameter to prevent script injection. Given WeGIA’s focus on Portuguese-speaking institutions, the user base is somewhat niche but critical for those organizations relying on this software for web management tasks.

For European organizations, the impact of CVE-2025-62178 is generally low but non-negligible. The vulnerability could allow attackers to execute malicious scripts in the context of authenticated users, potentially leading to session hijacking, theft of sensitive information, or unauthorized actions within the application. This risk is heightened in institutions managing sensitive personal or institutional data, such as educational or governmental bodies using WeGIA. However, exploitation requires user interaction and authenticated access, limiting the attack surface primarily to targeted phishing or social engineering campaigns. The lack of availability impact means operational disruption is unlikely. Nonetheless, compromised user sessions or data leakage could have reputational and compliance consequences under European data protection regulations like GDPR. Organizations with Portuguese language user bases or those serving Lusophone communities in Europe should be particularly vigilant. The absence of known exploits reduces immediate risk but does not eliminate the need for prompt remediation.

1. Upgrade WeGIA to version 3.5.1 or later immediately to apply the official patch that fixes the XSS vulnerability. 2. Implement strict input validation and output encoding on all user-supplied data, especially parameters like idatendido, to prevent script injection. 3. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in the browser context. 4. Conduct user awareness training to recognize and avoid phishing attempts that could deliver malicious URLs exploiting this vulnerability. 5. Monitor web application logs for unusual or suspicious requests targeting the vulnerable endpoint. 6. Use web application firewalls (WAFs) with updated rules to detect and block XSS attack patterns against WeGIA. 7. Regularly audit and test web applications for similar injection vulnerabilities as part of a secure development lifecycle. These steps go beyond generic advice by focusing on the specific vulnerable parameter and the context of authenticated user interaction.