CVE-2026-31895: WeGIA SQL Injection Vulnerability

CVE-2026-31895 Overview

CVE-2026-31895 is a SQL Injection vulnerability affecting WeGIA, a web manager application for charitable institutions. Prior to version 3.6.6, the application contains a critical SQL injection flaw in the html/matPat/restaurar_produto.php file. The id_produto parameter from $_GET is directly interpolated into SQL queries without parameterization or sanitization, allowing attackers to manipulate database queries and potentially compromise the entire database system.

Critical Impact

Authenticated attackers can exploit this SQL injection vulnerability to extract sensitive data, modify database contents, or potentially achieve full database compromise affecting charitable institution records.

Affected Products

• WeGIA versions prior to 3.6.6
• WeGIA html/matPat/restaurar_produto.php component

Discovery Timeline

• 2026-03-11 - CVE-2026-31895 published to NVD
• 2026-03-12 - Last updated in NVD database

Technical Details for CVE-2026-31895

Vulnerability Analysis

This SQL injection vulnerability (CWE-89) exists due to unsafe handling of user-supplied input in the product restoration functionality of WeGIA. The vulnerable endpoint accepts an id_produto parameter through the GET request method, which is then directly concatenated into SQL query strings without any form of input validation, parameterization, or escaping.

The attack requires network access and low-privilege authentication, but once these conditions are met, an attacker can fully compromise the confidentiality, integrity, and availability of the database. This is particularly concerning for charitable institutions that may store sensitive donor information, beneficiary data, and financial records.

Root Cause

The root cause of this vulnerability is the direct interpolation of the id_produto GET parameter into SQL queries without using prepared statements or parameterized queries. This classic SQL injection pattern allows malicious SQL code to be injected and executed by the database server.

Attack Vector

An authenticated attacker with network access to the WeGIA application can exploit this vulnerability by crafting malicious HTTP GET requests to html/matPat/restaurar_produto.php with specially crafted id_produto parameter values. The injected SQL code is executed with the privileges of the database user configured for the application.

The vulnerable code directly interpolates user input from the $_GET['id_produto'] variable into SQL queries. An attacker can append SQL injection payloads such as union-based queries, boolean-based blind injection, or time-based blind injection techniques to extract database contents or manipulate data. For detailed technical analysis, refer to the GitHub Security Advisory.

Detection Methods for CVE-2026-31895

Indicators of Compromise

• Unusual HTTP requests to html/matPat/restaurar_produto.php containing SQL syntax in the id_produto parameter
• Database error messages appearing in application logs or responses indicating malformed SQL queries
• Unexpected database queries containing UNION SELECT, OR 1=1, or other common SQL injection payloads
• Anomalous database access patterns or bulk data extraction from the WeGIA database

Detection Strategies

• Implement web application firewall (WAF) rules to detect SQL injection patterns in the id_produto parameter
• Monitor application and database logs for SQL syntax errors or injection-related keywords
• Deploy intrusion detection systems (IDS) with signatures for common SQL injection attack patterns
• Analyze HTTP traffic for requests to restaurar_produto.php with suspicious parameter values

Monitoring Recommendations

• Enable detailed logging for database queries to detect anomalous SQL statements
• Configure alerting for failed or malformed SQL query attempts
• Monitor for unusual data access patterns or bulk record retrievals from the WeGIA database
• Implement real-time log analysis for web server access logs targeting the vulnerable endpoint

How to Mitigate CVE-2026-31895

Immediate Actions Required

• Upgrade WeGIA to version 3.6.6 or later immediately
• If immediate upgrade is not possible, restrict access to the html/matPat/restaurar_produto.php endpoint
• Implement web application firewall rules to filter SQL injection attempts
• Review database logs for any evidence of prior exploitation

Patch Information

WeGIA version 3.6.6 addresses this vulnerability by implementing proper input validation and parameterized queries. Organizations running affected versions should update to the patched version as soon as possible. For additional details, see the GitHub Security Advisory.

Workarounds

• Implement input validation at the web server level to reject requests with SQL injection patterns in the id_produto parameter
• Deploy a web application firewall configured to block common SQL injection attack signatures
• Restrict network access to the WeGIA application to trusted IP addresses only
• Consider temporarily disabling the product restoration functionality until the patch can be applied

# Example: Apache mod_rewrite rule to block SQL injection attempts
# Add to .htaccess or Apache configuration
RewriteEngine On
RewriteCond %{QUERY_STRING} (union|select|insert|update|delete|drop|--|;) [NC]
RewriteRule ^html/matPat/restaurar_produto\.php - [F,L]