CVE-2026-4173: CodePhiliaX Chat2DB SQLi Vulnerability

CVE-2026-4173 Overview

A SQL injection vulnerability has been identified in CodePhiliaX Chat2DB up to version 0.3.7. This vulnerability affects multiple functions within the DMDBManage.java file, specifically the exportTable, exportTableColumnComment, exportView, exportProcedure, exportTriggers, exportTrigger, and updateProcedure functions of the Database Export Handler component. The flaw allows remote attackers to manipulate SQL queries through improper input sanitization, potentially compromising database integrity and confidentiality.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to extract sensitive data, modify database contents, or potentially escalate privileges within the Chat2DB application environment.

Affected Products

• CodePhiliaX Chat2DB versions up to 0.3.7
• DMDBManage.java Database Export Handler component

Discovery Timeline

• 2026-03-16 - CVE-2026-4173 published to NVD
• 2026-03-16 - Last updated in NVD database

Technical Details for CVE-2026-4173

Vulnerability Analysis

This vulnerability is classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), commonly known as injection. The flaw exists in the Database Export Handler component of Chat2DB, where user-supplied input is incorporated into SQL queries without proper sanitization or parameterization.

The affected functions handle database export operations including table exports, column comments, views, procedures, and triggers. When processing export requests, the application fails to adequately validate or escape user input before constructing SQL statements, creating an injection point that attackers can exploit.

The vulnerability is exploitable remotely over the network and requires low-level privileges to initiate. An exploit has been published and may be actively used by threat actors. The vendor was contacted regarding responsible disclosure but did not respond.

Root Cause

The root cause of this vulnerability is improper input validation in the DMDBManage.java file. The Database Export Handler functions directly concatenate user-controlled input into SQL query strings instead of using parameterized queries or prepared statements. This allows specially crafted input containing SQL metacharacters to alter the intended query logic.

Attack Vector

The attack can be initiated remotely over the network by an authenticated user with low privileges. An attacker can craft malicious input targeting any of the vulnerable export functions (exportTable, exportTableColumnComment, exportView, exportProcedure, exportTriggers, exportTrigger, or updateProcedure). By injecting SQL syntax into parameters processed by these functions, the attacker can:

• Extract sensitive data from the database
• Modify or delete database records
• Bypass application-level access controls
• Potentially execute administrative database operations

Technical details and proof-of-concept information can be found in the GitHub Issue Discussion and VulDB entry #351080.

Detection Methods for CVE-2026-4173

Indicators of Compromise

• Unusual SQL error messages in application logs originating from database export operations
• Unexpected database queries containing SQL injection payloads targeting DMDBManage.java functions
• Anomalous data export requests with suspicious parameter values containing SQL metacharacters
• Unauthorized data access patterns in database audit logs

Detection Strategies

• Monitor HTTP requests to Chat2DB export endpoints for SQL injection patterns such as single quotes, UNION statements, or comment sequences
• Implement Web Application Firewall (WAF) rules to detect and block SQL injection attempts targeting export functionality
• Review application logs for errors related to the exportTable, exportView, exportProcedure, and related functions
• Deploy database activity monitoring to detect anomalous queries originating from the Chat2DB application

Monitoring Recommendations

• Enable detailed logging for all database export operations in Chat2DB
• Configure alerting for SQL syntax errors or unexpected query patterns from the application
• Implement real-time monitoring of database connections from Chat2DB for suspicious activity
• Regularly audit database access logs for unauthorized data extraction attempts

How to Mitigate CVE-2026-4173

Immediate Actions Required

• Restrict network access to Chat2DB instances to trusted users and networks only
• Implement input validation at the application perimeter using a WAF with SQL injection rules
• Review and limit database user privileges used by Chat2DB to minimum required permissions
• Consider disabling or restricting access to database export functionality until a patch is available

Patch Information

No official patch has been released by the vendor at this time. The vendor was contacted regarding this vulnerability disclosure but did not respond. Organizations should monitor the CodePhiliaX Chat2DB repository for security updates and apply patches immediately when available.

For additional technical details, refer to the VulDB CTI entry.

Workarounds

• Implement parameterized queries or prepared statements at the database layer if source code access is available
• Deploy a Web Application Firewall with SQL injection detection rules in front of Chat2DB
• Restrict database export functionality to administrative users only through application configuration
• Use network segmentation to isolate Chat2DB instances from sensitive database systems
• Apply principle of least privilege to database accounts used by the application

# Example WAF rule to block common SQL injection patterns (ModSecurity)
SecRule ARGS "@detectSQLi" \
    "id:1001,\
    phase:2,\
    block,\
    msg:'SQL Injection Attack Detected - Chat2DB Protection',\
    logdata:'Matched Data: %{MATCHED_VAR}',\
    severity:'CRITICAL'"