CVE-2026-7206: sqlite-mcp SQL Injection Vulnerability

CVE-2026-7206 Overview

A SQL injection vulnerability has been discovered in dubydu sqlite-mcp up to version 0.1.0. The vulnerability exists in the extract_to_json function within the src/entry.py file, where improper handling of the output_filename argument allows attackers to inject malicious SQL commands. This flaw can be exploited remotely over the network, and an exploit has been publicly released, increasing the risk of active attacks.

Critical Impact
Remote SQL injection allowing attackers to manipulate database queries through the output_filename parameter in the extract_to_json function, potentially leading to unauthorized data access, modification, or deletion.

Affected Products

dubydu sqlite-mcp version 0.1.0 and earlier

Discovery Timeline

2026-04-28 - CVE CVE-2026-7206 published to NVD
2026-04-29 - Last updated in NVD database

Technical Details for CVE-2026-7206

Vulnerability Analysis

This vulnerability is classified as CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), commonly known as injection. The extract_to_json function in src/entry.py fails to properly sanitize the output_filename argument before incorporating it into SQL queries. This allows an attacker to craft malicious input that breaks out of the intended query structure and executes arbitrary SQL commands.

The network-accessible nature of this vulnerability means attackers can exploit it remotely without requiring local access to the system. The public availability of exploit code significantly lowers the barrier to exploitation.

Root Cause

The root cause of this vulnerability is insufficient input validation and sanitization of the output_filename parameter in the extract_to_json function. The application directly incorporates user-supplied input into SQL query construction without properly escaping or parameterizing the values, enabling injection attacks.

Attack Vector

The attack is conducted over the network by sending specially crafted input to the output_filename parameter. An attacker can manipulate this parameter to inject SQL commands that will be executed by the underlying SQLite database. Since the exploit has been publicly released, attackers can leverage existing proof-of-concept code to target vulnerable installations.

The vulnerability mechanism involves improper neutralization of special characters in the output_filename argument within src/entry.py. When malicious SQL syntax is passed through this parameter, it is incorporated directly into database queries without sanitization, allowing attackers to modify query logic or execute additional SQL statements. For detailed technical analysis, refer to the GitHub Issue Tracker and VulDB Vulnerability Details.

Detection Methods for CVE-2026-7206

Indicators of Compromise

Unusual SQL syntax or special characters (such as single quotes, semicolons, or SQL keywords) appearing in output_filename parameter values in application logs
Database error messages indicating malformed queries or unexpected SQL statements
Unexpected data extraction, modification, or deletion activities in the SQLite database
Anomalous network requests targeting the extract_to_json functionality

Detection Strategies

Implement web application firewall (WAF) rules to detect SQL injection patterns in request parameters
Deploy application-level logging to capture and analyze all inputs to the extract_to_json function
Use intrusion detection systems (IDS) with signatures for common SQL injection attack patterns
Monitor for abnormal database query patterns that deviate from expected application behavior

Monitoring Recommendations

Enable detailed logging for the sqlite-mcp application, particularly around the extract_to_json function
Set up alerts for database query failures or syntax errors that may indicate injection attempts
Monitor network traffic for suspicious requests containing SQL metacharacters targeting the vulnerable endpoint
Regularly review database audit logs for unauthorized queries or data access patterns

How to Mitigate CVE-2026-7206

Immediate Actions Required

Update dubydu sqlite-mcp to a version that includes the security patch (commit a5580cb992f4f6c308c9ffe6442b2e76709db548 or later)
If immediate patching is not possible, restrict network access to the vulnerable application
Implement input validation at the application perimeter to filter potentially malicious input
Review application logs for any signs of prior exploitation attempts

Patch Information

A security patch is available that addresses this SQL injection vulnerability. The fix is identified by commit hash a5580cb992f4f6c308c9ffe6442b2e76709db548. Organizations should apply this patch immediately by updating to the latest version of sqlite-mcp from the GitHub Project Repository. Additional details about the fix can be found in the GitHub Commit Details and GitHub Pull Request.

Workarounds

Implement strict input validation to sanitize the output_filename parameter before processing
Use parameterized queries or prepared statements if modifying the application code directly
Deploy a web application firewall (WAF) with SQL injection detection rules as a compensating control
Restrict network access to the sqlite-mcp application to trusted sources only until patching can be completed

bash

# Configuration example
# Update sqlite-mcp to patched version
cd /path/to/sqlite-mcp
git fetch origin
git checkout a5580cb992f4f6c308c9ffe6442b2e76709db548

# Alternatively, update via pip if available
pip install --upgrade sqlite-mcp