CVE-2025-53936
📋 TL;DR
A reflected cross-site scripting (XSS) vulnerability in WeGIA web management software allows attackers to inject malicious scripts via the 'nome_car' parameter in the personalizacao_selecao.php endpoint. This affects all WeGIA installations prior to version 3.4.5, potentially compromising user sessions and data. Charitable institutions and organizations using WeGIA for web management are at risk.
💻 Affected Systems
- WeGIA
📦 What is this software?
Wegia by Wegia
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator credentials, hijack user sessions, deface websites, or redirect users to malicious sites, potentially leading to complete system compromise.
Likely Case
Session hijacking, credential theft, or website defacement affecting users who click on crafted malicious links.
If Mitigated
Limited impact with proper input validation, output encoding, and Content Security Policy (CSP) headers in place.
🎯 Exploit Status
Reflected XSS typically requires user interaction (clicking a malicious link).
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.4.5
Vendor Advisory: https://github.com/LabRedesCefetRJ/WeGIA/security/advisories/GHSA-34vc-q923-v26p
Restart Required: No
Instructions:
1. Backup current installation. 2. Download WeGIA version 3.4.5 or later from official repository. 3. Replace vulnerable files with patched version. 4. Verify functionality.
🔧 Temporary Workarounds
Input Validation Filter
allAdd server-side validation to sanitize 'nome_car' parameter input.
Modify personalizacao_selecao.php to filter/escape user input before processing
Web Application Firewall (WAF)
allDeploy WAF rules to block XSS payloads in the 'nome_car' parameter.
Configure WAF to detect and block patterns like <script>, javascript:, etc. in query parameters
🧯 If You Can't Patch
- Implement strict Content Security Policy (CSP) headers to mitigate script execution.
- Disable or restrict access to the personalizacao_selecao.php endpoint if not required.
🔍 How to Verify
Check if Vulnerable:
Test by sending a payload like <script>alert('XSS')</script> in the 'nome_car' parameter to personalizacao_selecao.php and check if script executes.Check Version:
Check WeGIA version in admin panel or review application files for version indicators.Verify Fix Applied:
Attempt the same XSS payload after patching; script should not execute and input should be properly sanitized.📡 Detection & Monitoring
Log Indicators:
- HTTP requests to personalizacao_selecao.php with suspicious 'nome_car' parameter containing script tags or JavaScript code
Network Indicators:
- Unusual traffic patterns to the vulnerable endpoint, especially with encoded payloads
SIEM Query:
source="web_logs" AND uri="/personalizacao_selecao.php" AND query_string="*nome_car=*script*"