AUTH-002high SeverityBroken Authentication & Access Controls
Rate Limiting Enforced on Login, Signup & Reset Endpoints
AI models write straightforward credential check handlers without considering brute-force or credential-stuffing attacks.
1-Click Fix Prompt for Cursor & Claude Code
Review my codebase for "Rate Limiting Enforced on Login, Signup & Reset Endpoints" (AUTH-002). Issue: AI models write straightforward credential check handlers without considering brute-force or credential-stuffing attacks. Remediation required: Add IP and account-based rate limiting (e.g. Upstash Redis ratelimit) allowing no more than 5 failed attempts per minute. 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
AI models write straightforward credential check handlers without considering brute-force or credential-stuffing attacks.
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: Rate Limiting Enforced on Login, Signup & Reset Endpoints
// Insecure route handler trusting body user ID (IDOR risk)
export async function POST(req: Request) {
const { userId, newEmail } = await req.json();
// BUG: Any user can modify any other user record!
await db.user.update({ where: { id: userId }, data: { email: newEmail } });
return Response.json({ success: true });
}Launch-Ready Fix
// Production-ready fix for: Rate Limiting Enforced on Login, Signup & Reset Endpoints
// Protected route deriving identity from verified session
export async function POST(req: Request) {
const session = await auth();
if (!session?.user?.id) {
return Response.json({ error: "Unauthorized" }, { status: 401 });
}
const { newEmail } = await req.json();
// Scoped strictly to authenticated session user ID
await db.user.update({ where: { id: session.user.id }, data: { email: newEmail } });
return Response.json({ success: true });
}Remediation & Verification Checklist
Remediation: Add IP and account-based rate limiting (e.g. Upstash Redis ratelimit) allowing no more than 5 failed attempts per minute.
- Search your codebase for pattern matching "Rate Limiting Enforced on Login, Signup & Reset Endpoints".
- Apply the recommended remediation: Add IP and account-based rate limiting (e.g. Upstash Redis ratelimit) allowing no more than 5 failed attempts per minute.
- 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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