Laravel Security Best Practices

Comprehensive security guidance for Laravel applications to protect against common vulnerabilities.

When to Activate

• Adding authentication or authorization
• Handling user input and file uploads
• Building new API endpoints
• Managing secrets and environment settings
• Hardening production deployments

How It Works

• Middleware provides baseline protections (CSRF via VerifyCsrfToken, security headers via SecurityHeaders).
• Guards and policies enforce access control (auth:sanctum, $this->authorize, policy middleware).
• Form Requests validate and shape input (UploadInvoiceRequest) before it reaches services.
• Rate limiting adds abuse protection (RateLimiter::for('login')) alongside auth controls.
• Data safety comes from encrypted casts, mass-assignment guards, and signed routes (URL::temporarySignedRoute + signed middleware).

Core Security Settings

• APP_DEBUG=false in production
• APP_KEY must be set and rotated on compromise
• Set SESSION_SECURE_COOKIE=true and SESSION_SAME_SITE=lax (or strict for sensitive apps)
• Configure trusted proxies for correct HTTPS detection

Session and Cookie Hardening

• Set SESSION_HTTP_ONLY=true to prevent JavaScript access
• Use SESSION_SAME_SITE=strict for high-risk flows
• Regenerate sessions on login and privilege changes

Authentication and Tokens

• Use Laravel Sanctum or Passport for API auth
• Prefer short-lived tokens with refresh flows for sensitive data
• Revoke tokens on logout and compromised accounts

Example route protection:

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Route;

Route::middleware('auth:sanctum')->get('/me', function (Request $request) {
    return $request->user();
});

Password Security

• Hash passwords with Hash::make() and never store plaintext
• Use Laravel's password broker for reset flows

use Illuminate\Support\Facades\Hash;
use Illuminate\Validation\Rules\Password;

$validated = $request->validate([
    'password' => ['required', 'string', Password::min(12)->letters()->mixedCase()->numbers()->symbols()],
]);

$user->update(['password' => Hash::make($validated['password'])]);

Authorization: Policies and Gates

• Use policies for model-level authorization
• Enforce authorization in controllers and services

$this->authorize('update', $project);

Use policy middleware for route-level enforcement:

use Illuminate\Support\Facades\Route;

Route::put('/projects/{project}', [ProjectController::class, 'update'])
    ->middleware(['auth:sanctum', 'can:update,project']);

Validation and Data Sanitization

• Always validate inputs with Form Requests
• Use strict validation rules and type checks
• Never trust request payloads for derived fields

Mass Assignment Protection

• Use $fillable or $guarded and avoid Model::unguard()
• Prefer DTOs or explicit attribute mapping

SQL Injection Prevention

• Use Eloquent or query builder parameter binding
• Avoid raw SQL unless strictly necessary

DB::select('select * from users where email = ?', [$email]);

XSS Prevention

• Blade escapes output by default ({{ }})
• Use {!! !!} only for trusted, sanitized HTML
• Sanitize rich text with a dedicated library

CSRF Protection

• Keep VerifyCsrfToken middleware enabled
• Include @csrf in forms and send XSRF tokens for SPA requests

For SPA authentication with Sanctum, ensure stateful requests are configured:

// config/sanctum.php
'stateful' => explode(',', env('SANCTUM_STATEFUL_DOMAINS', 'localhost')),

File Upload Safety

• Validate file size, MIME type, and extension
• Store uploads outside the public path when possible
• Scan files for malware if required

final class UploadInvoiceRequest extends FormRequest
{
    public function authorize(): bool
    {
        return (bool) $this->user()?->can('upload-invoice');
    }

    public function rules(): array
    {
        return [
            'invoice' => ['required', 'file', 'mimes:pdf', 'max:5120'],
        ];
    }
}

$path = $request->file('invoice')->store(
    'invoices',
    config('filesystems.private_disk', 'local') // set this to a non-public disk
);

Rate Limiting

• Apply throttle middleware on auth and write endpoints
• Use stricter limits for login, password reset, and OTP

use Illuminate\Cache\RateLimiting\Limit;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\RateLimiter;

RateLimiter::for('login', function (Request $request) {
    return [
        Limit::perMinute(5)->by($request->ip()),
        Limit::perMinute(5)->by(strtolower((string) $request->input('email'))),
    ];
});

Secrets and Credentials

• Never commit secrets to source control
• Use environment variables and secret managers
• Rotate keys after exposure and invalidate sessions

Encrypted Attributes

Use encrypted casts for sensitive columns at rest.

protected $casts = [
    'api_token' => 'encrypted',
];

Security Headers

• Add CSP, HSTS, and frame protection where appropriate
• Use trusted proxy configuration to enforce HTTPS redirects

Example middleware to set headers:

use Illuminate\Http\Request;
use Symfony\Component\HttpFoundation\Response;

final class SecurityHeaders
{
    public function handle(Request $request, \Closure $next): Response
    {
        $response = $next($request);

        $response->
how to use laravel-security
CursorClaude CodeClineCodexWindsurfGooseGitHub CopilotVS CodeGemini CLIKiloOpencodeKimi CLIRoo ClineAiderContinueZedBolt.newLovablev0Replit AgentSweepSmol DeveloperDevinCavemanAmpAntigravity
How to use laravel-security on Cursor
AI-first code editor with Composer
1
Prerequisites
Before installing skills in Cursor, ensure your development environment meets these requirements:
›Cursor installed and configured on your development machine
›Node.js version 16.0+ with npm package manager (verify with node --version)
›Active project directory or workspace where you want to add laravel-security
2
Execute installation command
Execute the skills CLI command in your project's root directory to begin installation:
$npx skills add https://github.com/affaan-m/everything-claude-code --skill laravel-securitycopy
The skills CLI fetches laravel-security from GitHub repository affaan-m/everything-claude-code and configures it for Cursor.
3
Select Cursor when prompted
The CLI will show a list of available agents. Use arrow keys to navigate and space to select Cursor:
◆ Which agents do you want to install to?
│
│ ── Universal (.agents/skills) ── always included ────
│   • Amp
│   • Antigravity
│   • Cline
│   • Codex
│ ●Cursor(selected)
│   • Cursor
│   • Windsurf
4
Verify installation
Confirm successful installation by checking the skill directory location:
.cursor/skills/laravel-security
Reload or restart Cursor to activate laravel-security. Access the skill through slash commands (e.g., /laravel-security) or your agent's skill management interface.
⚠
Security & Verification Notice
We perform automated surface-level scans (Gen AI Scanner, Socket, Snyk) during installation. These checks detect common vulnerabilities but do not guarantee complete security. Always review skill source code and verify the publisher's reputation before production use.
Skills execute code in your development environment. Always verify the publisher's identity, review recent commits, and test in isolated environments before production deployment.
Additional Resources
›View source code on GitHub›Skills CLI documentation›Learn more about Cursor›What are agent skills?