CVE-2025-6694 Overview
CVE-2025-6694 is a cross-site scripting (XSS) vulnerability in LabRedesCefetRJ WeGIA 3.4.0, a web management application for philanthropic institutions. The flaw resides in the Adicionar Unidade component, specifically the /html/matPat/adicionar_unidade.php file. Attackers manipulate the Insira a nova unidade argument to inject arbitrary script content. Exploitation requires low-privileged authentication and user interaction with the crafted payload. The vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation. The vendor was contacted before disclosure but did not respond. A public proof-of-concept has been released.
Critical Impact
Authenticated remote attackers can inject persistent script payloads into the WeGIA interface, enabling session hijacking, credential theft, and unauthorized actions against other users of the application.
Affected Products
- LabRedesCefetRJ WeGIA version 3.4.0
- Affected file: /html/matPat/adicionar_unidade.php
- Affected component: Adicionar Unidade module
Discovery Timeline
- 2025-06-26 - CVE-2025-6694 published to the National Vulnerability Database (NVD)
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-6694
Vulnerability Analysis
The vulnerability affects the Adicionar Unidade (Add Unit) functionality of WeGIA 3.4.0. The application accepts user-supplied text through the Insira a nova unidade parameter without properly neutralizing HTML and JavaScript metacharacters. When the submitted content is later rendered in the application interface, the browser interprets the injected payload as executable script.
This is a stored-context input validation defect. An authenticated user with permission to add units can insert script tags, event handlers, or other active content that executes in the browsers of subsequent viewers. The attack requires network access and user interaction to trigger the injected payload.
Successful exploitation typically leads to session token theft, forced browser actions in the victim's session, phishing content overlays, or lateral movement within the application's authenticated context. Because WeGIA is used by charitable organizations to manage sensitive beneficiary data, compromised sessions may expose personally identifiable information.
Root Cause
The root cause is missing input sanitization and output encoding in the PHP handler for adicionar_unidade.php. The application concatenates the Insira a nova unidade field into HTML output without applying context-appropriate escaping functions such as htmlspecialchars() with ENT_QUOTES. This maps to [CWE-79].
Attack Vector
An authenticated attacker submits a crafted value through the Adicionar Unidade form. The payload is stored and rendered to other users, executing JavaScript in their browser sessions. Technical details are available in the GitHub PoC Repository and the VulDB entry #313960.
No verified sanitized exploitation code is published in the enriched data. Reproduction steps are documented in the referenced PoC repository.
Detection Methods for CVE-2025-6694
Indicators of Compromise
- HTTP POST requests to /html/matPat/adicionar_unidade.php containing HTML tags, JavaScript event handlers (onerror, onload, onmouseover), or <script> elements in form fields.
- Database records within WeGIA unit tables holding markup or script content instead of plain unit names.
- Anomalous outbound requests from client browsers loading the WeGIA interface, indicating attacker-controlled callback URLs.
Detection Strategies
- Deploy web application firewall (WAF) rules that inspect form parameters submitted to WeGIA endpoints for XSS signatures.
- Review PHP application logs for unusual payload lengths or non-alphanumeric characters submitted to the Insira a nova unidade field.
- Perform periodic content audits of stored unit records to detect embedded HTML or script fragments.
Monitoring Recommendations
- Enable Content Security Policy (CSP) reporting to capture blocked script execution attempts originating from WeGIA pages.
- Correlate authenticated user actions against the Adicionar Unidade component with subsequent anomalous session activity.
- Alert on browser telemetry showing script execution from unexpected inline sources within the application origin.
How to Mitigate CVE-2025-6694
Immediate Actions Required
- Restrict access to the Adicionar Unidade functionality to a minimal set of trusted, authenticated users pending a vendor fix.
- Deploy WAF rules to filter script tags and event handlers submitted to /html/matPat/adicionar_unidade.php.
- Audit existing unit records in the WeGIA database and remove any entries containing HTML or JavaScript content.
Patch Information
No vendor patch is referenced in the enriched CVE data. The vendor was contacted before public disclosure but did not respond. Monitor the WeGIA project references on VulDB for future remediation updates. Organizations running WeGIA 3.4.0 should track the upstream repository for security releases.
Workarounds
- Apply a reverse-proxy filter or WAF signature that blocks requests containing <script, javascript:, or common HTML event handlers targeting the affected endpoint.
- Enforce a strict Content Security Policy that disallows inline script execution across the WeGIA application origin.
- Provide security awareness guidance so administrators avoid opening or previewing untrusted unit entries until a patched release is available.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.