CVE-2024-53471 identifies multiple stored cross-site scripting (XSS) vulnerabilities within the /configuracao/meio_pagamento.php component of WeGIA version 3.2.0. Stored XSS occurs when malicious input is saved on the server and later rendered in web pages viewed by other users, enabling attackers to execute arbitrary JavaScript or HTML in victims' browsers. In this case, the vulnerability arises from insufficient sanitization or encoding of user-supplied data in the 'id' and 'name' parameters. An attacker can craft a payload that, when submitted, is stored and subsequently executed when other users access the affected page. This can lead to session hijacking, credential theft, or unauthorized actions performed on behalf of the user. The CVSS 3.1 base score of 6.1 reflects a network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), but requiring user interaction (UI:R). The scope is changed (S:C), indicating that the vulnerability affects resources beyond the vulnerable component. Confidentiality and integrity impacts are low, while availability is unaffected. No patches or known exploits are currently available, emphasizing the importance of proactive mitigation. The vulnerability is classified under CWE-79, a common web application security weakness related to improper neutralization of input.

The primary impact of CVE-2024-53471 is the potential for attackers to execute arbitrary scripts in the context of users' browsers, leading to theft of sensitive information such as session cookies or personal data, manipulation of displayed content, or execution of unauthorized actions. This can undermine user trust and lead to account compromise or data leakage. For organizations, this may result in reputational damage, regulatory penalties (especially under data protection laws), and potential financial losses. Since the vulnerability does not affect availability, denial of service is unlikely. However, the changed scope indicates that the attack could affect multiple users or components beyond the initial injection point, increasing the risk surface. The lack of required privileges means any unauthenticated attacker can attempt exploitation, though user interaction is necessary, limiting automated mass exploitation. Organizations relying on WeGIA for payment configuration or e-commerce functions are particularly at risk, as attackers could target payment-related workflows to conduct fraud or phishing attacks.

To mitigate CVE-2024-53471, organizations should implement strict input validation and output encoding on the 'id' and 'name' parameters within /configuracao/meio_pagamento.php to prevent injection of malicious scripts. Employing a robust web application firewall (WAF) with custom rules to detect and block suspicious payloads targeting these parameters can provide an additional layer of defense. Regularly audit and sanitize stored data to remove any existing malicious content. Developers should adopt secure coding practices, including the use of context-aware encoding libraries and frameworks that automatically neutralize XSS vectors. User education to recognize phishing or suspicious content can reduce the impact of successful exploits. Monitoring web logs for unusual input patterns or error messages related to these parameters can help detect attempted attacks. Since no official patches are currently available, organizations should engage with WeGIA vendors or community for updates and consider temporary workarounds such as disabling or restricting access to the vulnerable component if feasible.