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Windsurf Security Guide

AI-powered IDE by Codeium

medium risk level

Windsurf (formerly Codeium) is an AI-powered IDE that generates and refactors code with deep context awareness. Like Cursor, vulnerabilities are code-level — subtle logic flaws, insecure patterns, and dependencies with known CVEs.

Common Vulnerabilities

critical

Insecure deserialization patterns

AI may generate code that deserializes user input without validation, enabling code execution.

Never deserialize untrusted input. Use safe parsers with strict schemas.

high

Race conditions in async code

Generated async/await code may have race conditions in auth checks or data access.

Use proper locking mechanisms and atomic operations for critical sections.

medium

Verbose error messages in production

AI-generated error handlers often expose stack traces and internal details.

Use generic error messages in production. Log detailed errors server-side only.

high

Prototype pollution

Generated utility functions may merge objects unsafely, enabling prototype pollution.

Use Object.create(null) for dictionaries. Validate keys before merging.

medium

Missing HTTPS enforcement

Generated server configs may not enforce HTTPS redirects.

Always redirect HTTP to HTTPS. Set HSTS headers.

Pre-Launch Security Checklist

Search for eval(), Function(), and unsafe deserializationRequired

Review async code for race conditionsRequired

Ensure error handlers don't leak stack traces

Check for prototype pollution in object mergingRequired

Verify HTTPS is enforced in production

Run npm audit and fix critical vulnerabilitiesRequired

Review all third-party package imports

Check for hardcoded credentials in generated codeRequired

Validate all user input at the boundaryRequired

Test authentication flows for bypass vulnerabilities

Security Tips

Windsurf has excellent context awareness — use it to review your own code for security issues.

After generating code, run Erzo's Secret Scanner before committing.

Pay special attention to async patterns — AI often generates subtle race conditions.

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Erzo automatically detects these vulnerabilities and gives you actionable fixes.