WeGIA is a web manager for charitable institutions. In versions prior to 3.7.3, a Stored Cross-Site Scripting (XSS) vulnerability allows an authenticated user to inject malicious JavaScript into the Processo de Aceitação (html/atendido/processo_aceitacao.php) page, which is executed when user access the the page, enabling session hijacking and account takeover. This vulnerability is fixed in 3.7.3.