.js/.ts files

AI Code Security Scanner for JavaScript

JavaScript is the backbone of web development and one of the most common targets for AI code generation tools. AI assistants frequently generate JavaScript with innerHTML assignments instead of textContent, build SQL queries with template literals instead of parameterized queries, and scatter API keys directly in source files. Node.js crypto module usage generated by AI almost always defaults to legacy algorithms like SHA-1 and MD5.

Top vulnerabilities AI tools generate in JavaScript code

1

eval() with user input

Frequently generated by AI assistants writing JavaScript code

2

innerHTML XSS

Frequently generated by AI assistants writing JavaScript code

3

SQL injection via template literals

Frequently generated by AI assistants writing JavaScript code

4

hardcoded API keys

Frequently generated by AI assistants writing JavaScript code

5

crypto.createHash('sha1')

Frequently generated by AI assistants writing JavaScript code

What CodeShield detects in JavaScript files

CodeShield performs deep static analysis on .js/.ts files to detect OWASP Top 10 vulnerabilities, exposed secrets, quantum-vulnerable cryptography, and insecure coding patterns specific to the JavaScript ecosystem.

Template literal SQL query construction

innerHTML and outerHTML assignments with dynamic data

document.write() with unsanitized input

eval() and Function() constructor usage

Hardcoded API keys, tokens, and secrets in source

crypto.createHash('md5') and crypto.createHash('sha1')

Node.js crypto RSA and ECDSA key generation

CORS wildcard (*) configuration

JWT secrets hardcoded in source files

Disabled TLS certificate verification

AI tools that generate JavaScript code

The following AI coding assistants actively generate JavaScript code and are known to introduce the vulnerability patterns listed above:

CopilotCursorv0

These tools produce correct code in most cases, but studies show that up to 45% of AI-generated code contains at least one security vulnerability. CodeShield catches what code review misses.

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