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Fix API Rate Limit Exhaustion in Spiral

API Rate Limit Exhaustion in Spiral isn't just a nuisance; it's a critical DoS vector. In a RoadRunner-backed environment, failing to throttle allows attackers to saturate worker pools and drain backend resources. If you aren't implementing stateful throttling, your application is a sitting duck for brute-force and resource exhaustion attacks.

The Vulnerable Pattern

namespace App\Controller;

class AuthController { public function login(LoginRequest $request, AuthService $auth) { // VULNERABLE: No rate limiting logic. // An attacker can send 10,000 requests per second to brute-force credentials // or exhaust the PHP worker pool. if ($auth->verify($request->getCredentials())) { return [‘status’ => ‘ok’]; }

    return ['status' => 'fail'];
}

}

The Secure Implementation

The fix utilizes the Spiral RateLimiter component, typically backed by RoadRunner KV or Redis. By wrapping the sensitive logic in a `check()` call, we create a deterministic barrier. The `TooManyRequestsException` automatically triggers a 429 HTTP status code. Using `$request->getRemoteAddress()` as part of the key ensures that throttling is applied per-client, preventing a single malicious actor from impacting service availability for others.

namespace App\Controller;

use Spiral\Http\Exception\ClientException\TooManyRequestsException; use Spiral\RateLimiter\RateLimiterInterface;

class AuthController { public function login(LoginRequest $request, AuthService $auth, RateLimiterInterface $limiter) { // SECURE: Implement a leaky bucket or fixed window limit. // Keyed by IP and endpoint to prevent distributed exhaustion. $limitKey = sprintf(‘login:%s’, $request->getRemoteAddress());

    // Allow 5 attempts per 60 seconds
    $status = $limiter->check($limitKey, 5, 60);

    if (!$status->isValid()) {
        throw new TooManyRequestsException('Rate limit exceeded. Try again later.');
    }

    if ($auth->verify($request->getCredentials())) {
        return ['status' => 'ok'];
    }

    return ['status' => 'fail'];
}

}

System Alert • ID: 5688
Target: Spiral API
Potential Vulnerability

Your Spiral API might be exposed to API Rate Limit Exhaustion

74% of Spiral apps fail this check. Hackers use automated scanners to find this specific flaw. Check your codebase before they do.

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