CVE-2026-23723: WeGIA SQL Injection Vulnerability

CVE-2026-23723 Overview

CVE-2026-23723 is an authenticated SQL Injection vulnerability affecting WeGIA, a web manager application designed for charitable institutions. The vulnerability exists in the Atendido_ocorrenciaControle endpoint and can be exploited through the id_memorando parameter. Successful exploitation allows attackers with authenticated access to perform full database exfiltration, expose sensitive personally identifiable information (PII), and potentially read arbitrary files in misconfigured environments.

Critical Impact
This SQL Injection flaw enables authenticated attackers to extract complete database contents, including sensitive PII of beneficiaries and donors, and may allow arbitrary file reads on vulnerable systems with improper configurations.

Affected Products

WeGIA versions prior to 3.6.2

Discovery Timeline

January 16, 2026 - CVE-2026-23723 published to NVD
January 16, 2026 - Last updated in NVD database

Technical Details for CVE-2026-23723

Vulnerability Analysis

This SQL Injection vulnerability (CWE-89) resides in the Atendido_ocorrenciaControle endpoint of the WeGIA application. The id_memorando parameter fails to properly sanitize user-supplied input before incorporating it into SQL queries. While authentication is required to reach the vulnerable endpoint, once an attacker has valid credentials, they can inject malicious SQL statements to manipulate database queries.

The exploitation impact is significant for charitable institutions using WeGIA, as these organizations typically store sensitive beneficiary data, donor information, and financial records. The vulnerability enables complete database compromise, allowing attackers to extract, modify, or delete critical organizational data.

Root Cause

The root cause of CVE-2026-23723 is improper input validation and the absence of parameterized queries in the Atendido_ocorrenciaControle endpoint. The id_memorando parameter is directly concatenated into SQL statements without proper sanitization or the use of prepared statements, allowing attackers to break out of the intended query context and execute arbitrary SQL commands.

Attack Vector

The attack is network-based and requires the attacker to have valid authentication credentials for the WeGIA application. Once authenticated, the attacker can craft malicious requests to the Atendido_ocorrenciaControle endpoint with specially crafted SQL payloads in the id_memorando parameter. The injected SQL can leverage techniques such as UNION-based injection, blind SQL injection, or time-based injection to extract database contents.

In misconfigured environments where the database user has excessive privileges, attackers may also leverage SQL injection to read files from the filesystem using database-specific functions (such as LOAD_FILE() in MySQL).

For technical details on the vulnerability and fix implementation, see the GitHub Security Advisory GHSA-xfmp-2hf9-gfjp.

Detection Methods for CVE-2026-23723

Indicators of Compromise

Unusual or malformed requests to the Atendido_ocorrenciaControle endpoint containing SQL syntax in the id_memorando parameter
Database query logs showing UNION SELECT statements, subqueries, or timing functions originating from web application queries
Unexpected database errors appearing in application logs indicating SQL syntax errors
Large data transfers from database servers following authenticated web requests

Detection Strategies

Implement Web Application Firewall (WAF) rules to detect SQL injection patterns in the id_memorando parameter
Monitor application logs for requests containing SQL keywords (UNION, SELECT, SLEEP, BENCHMARK) in parameter values
Deploy database activity monitoring to detect anomalous query patterns or data exfiltration attempts
Review authentication logs for compromised accounts being used to access the vulnerable endpoint

Monitoring Recommendations

Enable verbose logging on the WeGIA application to capture full request parameters
Configure database audit logging to track all queries executed against sensitive tables
Set up alerts for failed SQL queries that may indicate injection attempts
Monitor for unusual authenticated session activity targeting the Atendido_ocorrenciaControle endpoint

How to Mitigate CVE-2026-23723

Immediate Actions Required

Upgrade WeGIA to version 3.6.2 or later immediately
Review database access logs for evidence of prior exploitation
Audit database permissions to ensure the application database user has minimal required privileges
Implement network segmentation to limit database access from untrusted networks

Patch Information

The vulnerability has been fixed in WeGIA version 3.6.2. Organizations should upgrade to this version or later to remediate the vulnerability. The fix is available through the GitHub Release 3.6.2. Implementation details can be found in the GitHub Pull Request.

Workarounds

If immediate patching is not possible, implement a Web Application Firewall (WAF) rule to block requests containing SQL injection patterns in the id_memorando parameter
Restrict access to the Atendido_ocorrenciaControle endpoint to only trusted IP addresses or users
Apply the principle of least privilege to the database user account used by WeGIA, removing FILE privileges and access to system tables
Consider temporarily disabling the affected functionality until the patch can be applied

bash

# Example: Apply least privilege to MySQL database user
# Remove unnecessary privileges that could be leveraged via SQL injection
REVOKE FILE ON *.* FROM 'wegia_user'@'localhost';
REVOKE SUPER ON *.* FROM 'wegia_user'@'localhost';
FLUSH PRIVILEGES;