SEC-010high SeverityHardcoded Secrets & Credential Exposure
Public Webhook Signing Secrets Verified on Backend Only
Agents sometimes import webhook secrets into shared types or configuration files accessible by frontend builders.
1-Click Fix Prompt for Cursor & Claude Code
Review my codebase for "Public Webhook Signing Secrets Verified on Backend Only" (SEC-010). Issue: Agents sometimes import webhook secrets into shared types or configuration files accessible by frontend builders. Remediation required: Keep STRIPE_WEBHOOK_SECRET isolated to the exact route handler processing incoming POST webhook requests. Please: 1. Locate any occurrences of this issue across my repository. 2. Refactor the code to follow production standards without breaking existing functionality. 3. Provide a clear command or step to test and verify the fix.
Why AI Assistants Write This Bug
Agents sometimes import webhook secrets into shared types or configuration files accessible by frontend builders.
AI code generation prioritizes immediate syntax execution over production edge cases. When an assistant hits an undefined variable or strict type error, it frequently takes the path of least resistance rather than implementing standard pre-launch security patterns.
Code Comparison
Common AI Code PatternVulnerable
// Vulnerable AI-generated pattern for: Public Webhook Signing Secrets Verified on Backend Only
// Leaking sensitive key in client-callable code
export const STRIPE_KEY = "sk_live_51OzRealProductionKey12345";
export async function checkout() {
// Client bundle exposes secret key to Chrome DevTools
}Launch-Ready Fix
// Production-ready fix for: Public Webhook Signing Secrets Verified on Backend Only
// Stored strictly in server-side environment variable
const stripeSecretKey = process.env.STRIPE_SECRET_KEY;
if (!stripeSecretKey) {
throw new Error("Missing STRIPE_SECRET_KEY in server environment");
}
// Invoked strictly inside server route or Server Action
export const stripe = new Stripe(stripeSecretKey);Remediation & Verification Checklist
Remediation: Keep STRIPE_WEBHOOK_SECRET isolated to the exact route handler processing incoming POST webhook requests.
- Search your codebase for pattern matching "Public Webhook Signing Secrets Verified on Backend Only".
- Apply the recommended remediation: Keep STRIPE_WEBHOOK_SECRET isolated to the exact route handler processing incoming POST webhook requests.
- Run local build and test commands to ensure no regressions.
- Verify in your browser or with curl that the issue is resolved.
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