LabRedesCefetRJ WeGIA Additional Categoria adicionar_categoria.php cross site scripting

Successful exploitation of CVE-2025-6695 allows an attacker to execute arbitrary JavaScript code within the context of a user's browser session. This can lead to various malicious outcomes, including session hijacking, credential theft, and defacement of the WeGIA interface. The attacker could potentially steal sensitive information entered by users, redirect them to malicious websites, or even gain control of the application server if the user has sufficient privileges. Given the remote accessibility of the vulnerability, the blast radius extends to all users interacting with the affected WeGIA instance.

Organizations using WeGIA version 3.4.0 are at direct risk. Shared hosting environments where multiple users share the same WeGIA instance are particularly vulnerable, as an attacker could potentially compromise other users' accounts through this XSS vulnerability.

• generic web: Use curl to test the /html/matPat/adicionar_categoria.php endpoint with a simple XSS payload (e.g., <script>alert(1)</script>).

curl -X POST -d "Insira a nova categoria=<script>alert(1)</script>" http://your-wegia-instance/html/matPat/adicionar_categoria.php

• generic web: Examine access and error logs for suspicious requests containing XSS payloads or unusual characters in the 'Insira a nova categoria' parameter. • generic web: Check response headers for signs of XSS injection, such as the presence of injected script tags.

1. 2025-06-26Disclosure

   disclosure

1. Gereserveerd2025-06-26
2. Gepubliceerd2025-06-26
3. EPSS bijgewerkt2026-03-23

The primary mitigation for CVE-2025-6695 is to upgrade WeGIA to version 3.4.1 or later, which contains the fix. If immediate upgrading is not possible, consider implementing input validation and sanitization on the 'Insira a nova categoria' argument to prevent malicious code injection. Web application firewalls (WAFs) configured to detect and block XSS attacks can provide an additional layer of defense. Regularly review and update your WAF rules to ensure they are effective against emerging threats. After upgrading, confirm the vulnerability is resolved by attempting to inject a simple XSS payload into the 'Insira a nova categoria' field and verifying that it is properly sanitized.