CVE-2026-23722 in WeGIA
Summary
by MITRE • 01/16/2026
WeGIA is a Web Manager for Charitable Institutions. Prior to 3.6.2, a Reflected Cross-Site Scripting (XSS) vulnerability was discovered in the WeGIA system, specifically within the html/memorando/insere_despacho.php file. The application fails to properly sanitize or encode user-supplied input via the id_memorando GET parameter before reflecting it into the HTML source (likely inside a <script> block or an attribute). This allows unauthenticated attackers to inject arbitrary JavaScript or HTML into the context of the user's browser session. This vulnerability is fixed in 3.6.2.
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Analysis
by VulDB Data Team • 01/31/2026
The WeGIA web application serves as a management platform for charitable institutions, handling sensitive administrative functions and user data within a web-based interface. This vulnerability exists in versions prior to 3.6.2, representing a critical security flaw that compromises the integrity of the application's user sessions. The system's failure to properly validate and sanitize user input creates an exploitable condition that can be leveraged by malicious actors without requiring authentication. The vulnerability specifically manifests in the html/memorando/insere_despacho.php file, which processes user requests containing the id_memorando parameter through the GET method. This parameter is directly incorporated into the HTML response without adequate sanitization or encoding measures, creating a direct pathway for attackers to inject malicious code into the application's output.
The technical nature of this vulnerability classifies as reflected cross-site scripting, a category that falls under CWE-79 which specifically addresses improper neutralization of input during web page generation. The flaw occurs when the application reflects user-supplied data back to the browser without proper encoding, allowing attackers to inject JavaScript code that executes within the context of other users' sessions. The vulnerability is particularly dangerous because it operates entirely within the HTTP GET request parameters, making it easily exploitable through crafted URLs that can be delivered via email, social media, or malicious websites. Attackers can construct malicious payloads that, when executed, can steal session cookies, redirect users to phishing sites, or perform actions on behalf of authenticated users. The reflected nature means that the malicious script is not stored on the server but rather injected into the response by the application itself, making it particularly challenging to detect and prevent through traditional server-side security measures.
The operational impact of this vulnerability extends beyond simple data theft, as it can enable complete session hijacking and privilege escalation within the charitable institution management system. An attacker could potentially access sensitive donor information, financial records, or administrative functions that are typically protected by proper authentication mechanisms. The lack of authentication requirements for exploitation means that any user who clicks on a malicious link could become compromised, creating a widespread security risk across the entire user base. This vulnerability represents a significant threat to the confidentiality and integrity of the charitable institution's data, potentially allowing unauthorized modifications to records or the complete compromise of user sessions. The reflected XSS attack vector also enables the execution of malicious code that could establish persistent backdoors or exfiltrate data through beaconing mechanisms.
Mitigation strategies for this vulnerability should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application's codebase. The most effective immediate solution involves properly sanitizing all user-supplied input through the id_memorando parameter by implementing strict input validation and HTML encoding before any data is reflected back to the browser. Organizations should implement Content Security Policy headers to limit the execution of inline scripts and prevent unauthorized code injection. The fix in version 3.6.2 demonstrates the importance of regular security updates and patch management procedures. Security teams should also implement web application firewalls to monitor and block suspicious requests containing known XSS patterns, while conducting regular security assessments to identify similar vulnerabilities in other components of the application. Additionally, implementing proper logging and monitoring of user input patterns can help detect potential exploitation attempts and provide early warning of active attacks targeting this vulnerability. The remediation process should include comprehensive code reviews to ensure that all GET parameters are properly validated and encoded, aligning with industry best practices for secure web application development and addressing the fundamental security gaps that allowed this vulnerability to persist.