CVE-2026-23731 identifies a clickjacking vulnerability in the WeGIA web management application developed by LabRedesCefetRJ, affecting all versions prior to 3.6.2. The root cause is the absence of defensive HTTP headers that prevent the application’s pages from being embedded within frames or iframes on attacker-controlled websites. Specifically, the application does not send the X-Frame-Options header nor configure the Content-Security-Policy header with the frame-ancestors directive. This omission allows an attacker to load WeGIA pages inside a malicious HTML document, overlaying deceptive UI elements or hiding legitimate buttons. Consequently, users may be tricked into performing unintended actions, such as approving transactions or modifying sensitive data, without their informed consent. The vulnerability is classified under CWE-1021, which concerns improper restriction of rendered UI layers or frames. Exploitation requires no authentication but does require user interaction, such as clicking on a disguised button. The vulnerability does not directly expose confidential information or cause denial of service but can compromise the integrity of user actions. The issue was publicly disclosed on January 16, 2026, and fixed in WeGIA version 3.6.2. No known exploits have been reported in the wild to date. The CVSS v3.1 base score is 4.3, indicating medium severity, with attack vector network, low attack complexity, no privileges required, user interaction required, and impact limited to integrity.

For European organizations, particularly charitable institutions using WeGIA, this vulnerability poses a risk of unauthorized manipulation of sensitive workflows through social engineering. While it does not directly expose confidential data or disrupt service availability, the integrity of user actions can be compromised, potentially leading to fraudulent approvals, data tampering, or unauthorized changes in the management of charitable resources. This can damage organizational reputation, lead to financial losses, and undermine trust with donors and beneficiaries. The requirement for user interaction limits large-scale automated exploitation but targeted attacks against high-value users or administrators remain a concern. Given the nature of charitable organizations, which often handle donations and sensitive beneficiary information, the risk of fraud or misappropriation due to clickjacking could have significant operational and legal consequences under European data protection regulations.

European organizations should immediately upgrade WeGIA installations to version 3.6.2 or later, where the vulnerability is patched. In addition to upgrading, organizations should implement HTTP response headers to enforce frame restrictions: specifically, configure the X-Frame-Options header with the value DENY or SAMEORIGIN, and/or set the Content-Security-Policy header with a frame-ancestors directive that restricts framing to trusted domains. Web application firewalls (WAFs) can be configured to detect and block suspicious framing attempts. User awareness training should emphasize the risks of interacting with suspicious links or embedded content. Regular security audits and penetration testing should verify that frame protection headers are correctly applied and effective. For organizations unable to immediately upgrade, temporary mitigations include deploying reverse proxies or security gateways that inject the necessary headers. Monitoring for unusual user activity or workflow anomalies can help detect potential exploitation attempts.