What types of SQL injection does this tool detect?

This tool sends real HTTP requests with crafted payloads and checks for error-based, boolean-based blind, time-based blind, UNION-based, stacked query, and out-of-band SQL injection vectors by analyzing live server responses.

Is this tool safe to use on any website?

Only test websites you own or have explicit written permission to test. Unauthorized security testing may be illegal in your jurisdiction under computer fraud and abuse laws.

Does this tool send real SQL injection payloads?

Yes. The PHP backend sends real HTTP requests with SQL injection payloads to the target URL and analyzes the live server responses for database error signatures, WAF detection, timing anomalies, and response length changes.

What is the difference between blind and error-based SQL injection?

Error-based SQL injection triggers visible database error messages in the HTTP response that leak structural information. Blind SQL injection infers database contents through boolean response differences or measured time delays without any visible error output.

SQL Injection Testing Tool – Free Online Scanner

Q: How can I prevent SQL injection vulnerabilities?

Use parameterized queries or prepared statements, implement strict input validation and whitelisting, apply least-privilege database accounts, deploy a Web Application Firewall (WAF), and sanitize all user-supplied data before use in SQL queries.

Advanced Live Testing Features

The PHP cURL backend performs real HTTP probing — not simulations — giving you authentic vulnerability intelligence.

Real HTTP Probing via PHP cURL

Every payload is injected into a real HTTP request sent by the PHP backend using cURL. The server response — headers, body, timing — is analyzed live for injection signals.

Accurate Time-Based Detection

Time-based blind injection uses server-side timing measurement (microtime) from the PHP layer — far more accurate than browser-side timing, which is affected by network jitter.

Multi-DB Error Signature Library

Server responses are scanned against 50+ known database error signatures covering MySQL, MSSQL, Oracle, PostgreSQL, and SQLite to confirm and fingerprint the backend engine.

WAF & Filter Identification

Detects Cloudflare, ModSecurity, Sucuri, Incapsula, and Akamai WAF responses by analyzing HTTP status codes, response headers, and body content patterns.

Baseline + Differential Analysis

Before injecting payloads, a clean baseline request is made. Each probe response is compared by length, status code, and content hash to detect subtle blind injection changes.

Auto Parameter Discovery

The baseline phase automatically discovers query-string parameters AND hidden HTML form inputs, giving you a complete picture of all injection entry points.

Authenticated Scan Support

Pass Cookie, Authorization, and custom HTTP headers so the scanner can test endpoints behind login walls, API keys, or session-based authentication.

Security Header Audit

Every probe response is checked for the presence of key security headers — CSP, X-Frame-Options, HSTS, X-XSS-Protection, X-Content-Type-Options — reported per finding.

CVSS-Aligned Risk Scoring

Each confirmed vulnerability is scored Critical, High, Medium, or Low based on injection type severity, with per-finding remediation guidance and an exportable report.

How the Live Scanner Works

A structured, real-request approach to identifying SQL injection vulnerabilities from end to end.

Enter Target URL & Authorize

Provide the full URL of the target page including query parameters. Confirm you own the target or have written authorization. Optionally pass authentication cookies or headers for protected endpoints.

PHP Baseline Request

The PHP backend makes a clean, unmodified GET request to your target via cURL. This captures baseline HTTP code, response size, response time, server headers, and auto-discovers all URL and form parameters.

Live Payload Injection

For each detected parameter and each selected injection type, the PHP backend sends a real HTTP request with an injected payload. For time-based tests, server-side microtime() is used for precision measurement, not browser timing.

Real Response Analysis

Each live response is checked: body scanned for 50+ database error signatures, response length compared to baseline for blind injection, timing measured against baseline for time-based injection, and headers inspected for WAF/security signals.

Report & Export

Results are compiled into a severity-scored report with exact payloads, affected parameters, response evidence, and remediation advice. Export as plain text or JSON for your security documentation and issue tracking.

What Is SQL Injection Testing?

SQL injection (SQLi) testing is a critical component of any web application security assessment. It involves deliberately probing input fields, URL parameters, and form data to uncover whether an application is vulnerable to SQL injection attacks — one of the most dangerous and prevalent vulnerabilities listed in the OWASP Top 10, capable of causing complete database compromise, authentication bypass, and unauthorized data exfiltration.

A live SQL vulnerability scanner like this one works by sending real HTTP requests to the target with specially crafted payloads inserted into user-controllable parameters. When a target is vulnerable, the backend database processes attacker-supplied SQL syntax and produces observable side effects — error messages in the response body, changes in response size for boolean-based blind injection, or measurable delays for time-based blind injection. Understanding all three detection methods is essential for thorough SQL injection vulnerability testing.

There are several major attack categories tested in a professional SQL injection test. Error-based SQLi extracts data by triggering verbose database error messages that leak table names, column names, and version strings — detectable by scanning for signatures like "you have an error in your SQL syntax" (MySQL) or "ORA-00907" (Oracle). Boolean-based blind SQL injection infers data by sending true/false conditions such as ' AND 1=1-- versus ' AND 1=2-- and comparing the response content or length. Time-based blind SQLi uses database sleep functions — SLEEP(5) in MySQL, WAITFOR DELAY '0:0:5' in MSSQL, pg_sleep(5) in PostgreSQL — to confirm injection by measuring response latency on the server side.

UNION-based SQL injection appends additional SELECT statements to retrieve data from other tables in the same response, while stacked queries allow multiple SQL statements in a single input, enabling write operations, stored procedure execution, or even OS command injection through functions like xp_cmdshell. A real-world SQL injection example: a login form accepting ' OR '1'='1'-- in the username field bypasses authentication entirely by making the WHERE clause always true — a classic first demonstration of the vulnerability's severity.

SQL injection checker tools are used by penetration testers during web application audits, developers during secure code review, and bug bounty hunters scanning for high-severity vulnerabilities. Prevention centers on parameterized queries (prepared statements), input validation and whitelisting, least-privilege database accounts, and WAF deployment — making SQL injection prevention a defense-in-depth strategy. This free online SQL injection testing tool uses a real PHP cURL engine to send live probes, identify injection points, detect database types, and generate exportable reports — all without installing any software.

Frequently Asked Questions

What is SQL injection testing?

SQL injection testing is the process of probing a web application's input fields and URL parameters to detect vulnerabilities that allow attackers to manipulate backend SQL queries, potentially exposing, modifying, or deleting database data and bypassing authentication.

Does this tool send real HTTP requests or just simulate them?

Real live HTTP requests. The PHP backend uses cURL to send each payload to the actual target server and receives a genuine response. Response body, headers, timing, and HTTP status codes are all analyzed from real server output — not simulated.

Is it legal to test any website?

No. You must only test websites you own or have explicit written authorization to test. Unauthorized security testing violates computer fraud and abuse laws in most jurisdictions globally, including the CFAA (US), Computer Misuse Act (UK), and equivalent legislation elsewhere.

What is the difference between error-based and blind SQL injection?

Error-based injection triggers visible database error messages in the HTTP response that directly leak information about table names, column names, and database versions. Blind injection has no visible errors — data is inferred through subtle response differences (boolean-based) or measured server-side time delays (time-based).

Can I test password-protected pages?

Yes. Use the HTTP Headers tab to provide session cookies or Authorization header values. These are forwarded by the PHP cURL engine with every probe request, allowing scanning of authenticated application areas.

How do I prevent SQL injection vulnerabilities?

Use parameterized queries or prepared statements exclusively — never string-concatenate user input into SQL. Implement strict input whitelisting, apply least-privilege database accounts, deploy a WAF, escape outputs, and conduct regular SQLi testing as part of your SDLC security process.