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Vulnerability DetectionA02:2021

API Key Exposure Scanner

Detect exposed API keys, tokens, and secrets in your frontend code and responses.

Exposed API keys in client-side code are one of the most common and dangerous security mistakes in modern web applications. Our scanner analyzes JavaScript bundles, HTML source, and HTTP responses for leaked credentials including AWS keys, Stripe secret keys, database connection strings, and dozens of other secret patterns.

What This Scanner Does

Scans HTML source code, JavaScript bundles, and HTTP responses for patterns matching known API key formats. Detects AWS access keys, Stripe secret keys, GitHub tokens, database URIs, JWT secrets, and 30+ other credential patterns.

Why It Matters

Exposed API keys give attackers direct access to your services — they can rack up cloud bills, access user data, send emails as your domain, or compromise your entire infrastructure. Vibe-coded apps are especially prone to this because AI assistants sometimes embed secrets directly in client-side code.

Common Findings

  • Stripe secret key in client-side JavaScript
  • AWS credentials in environment variable leaks
  • Database connection strings in API responses
  • Hardcoded JWT signing secrets in frontend bundles

OWASP Top 10 Coverage

A02:2021Cryptographic Failures

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