Authenticated user gets changed after request randomly - php

Question

I have an issue with laravel's authentication.
After some time, authenticated user changes to random one.
Client is using same internet for 3 devices(users) on a same network to use the site, and this particular bug would appear when they opened two tabs parallelly and used the site - the user on one tab would change to a user that is in those three, or even odder - a user with device that is on a different network and they would get a 419 status code.
I created a cronjob for optimize:clear command to run 2 / hour. Note: this occurs only on production server - i tried to reproduce this locally without success.
Below is my login controller, that is using trait https://laravel.com/api/6.x/Illuminate/Foundation/Auth/AuthenticatesUsers.html
from laravel 6.x, even though my laravel version in project is 7.0.
Only thing i modified from trait is the credentials used in login - instead of email i'm using username.
Since I got no way of solving this one, any help would be appreciated.
<?php
namespace App\Http\Controllers\Auth;
use App\Http\Controllers\Controller;
use App\Providers\RouteServiceProvider;
use Illuminate\Foundation\Auth\AuthenticatesUsers;
use Illuminate\Foundation\Auth\RedirectsUsers;
use Illuminate\Foundation\Auth\ThrottlesLogins;
use Illuminate\Http\Request;
use Illuminate\Http\Response;
use Illuminate\Support\Facades\Auth;
use Illuminate\Validation\ValidationException;
class LoginController extends Controller
{
/*
|--------------------------------------------------------------------------
| Login Controller
|--------------------------------------------------------------------------
|
| This controller handles authenticating users for the application and
| redirecting them to your home screen. The controller uses a trait
| to conveniently provide its functionality to your applications.
|
*/
use RedirectsUsers, ThrottlesLogins;
/**
* Show the application's login form.
*
* #return \Illuminate\View\View
*/
public function showLoginForm()
{
return view('auth.login');
}
/**
* Handle a login request to the application.
*
* #param \Illuminate\Http\Request $request
* #return \Illuminate\Http\RedirectResponse|\Illuminate\Http\Response|\Illuminate\Http\JsonResponse
*
* #throws \Illuminate\Validation\ValidationException
*/
public function login(Request $request)
{
$this->validateLogin($request);
// If the class is using the ThrottlesLogins trait, we can automatically throttle
// the login attempts for this application. We'll key this by the username and
// the IP address of the client making these requests into this application.
if (method_exists($this, 'hasTooManyLoginAttempts') &&
$this->hasTooManyLoginAttempts($request)) {
$this->fireLockoutEvent($request);
return $this->sendLockoutResponse($request);
}
if ($this->attemptLogin($request)) {
return $this->sendLoginResponse($request);
}
// If the login attempt was unsuccessful we will increment the number of attempts
// to login and redirect the user back to the login form. Of course, when this
// user surpasses their maximum number of attempts they will get locked out.
$this->incrementLoginAttempts($request);
return $this->sendFailedLoginResponse($request);
}
/**
* Validate the user login request.
*
* #param \Illuminate\Http\Request $request
* #return void
*
* #throws \Illuminate\Validation\ValidationException
*/
protected function validateLogin(Request $request)
{
$request->validate([
$this->username() => 'required|string',
'password' => 'required|string',
]);
}
/**
* Attempt to log the user into the application.
*
* #param \Illuminate\Http\Request $request
* #return bool
*/
protected function attemptLogin(Request $request)
{
return $this->guard()->attempt(
$this->credentials($request), $request->filled('remember')
);
}
/**
* Get the needed authorization credentials from the request.
*
* #param \Illuminate\Http\Request $request
* #return array
*/
protected function credentials(Request $request)
{
return $request->only($this->username(), 'password');
}
/**
* Send the response after the user was authenticated.
*
* #param \Illuminate\Http\Request $request
* #return \Illuminate\Http\Response
*/
protected function sendLoginResponse(Request $request)
{
$request->session()->regenerate();
$this->clearLoginAttempts($request);
if ($response = $this->authenticated($request, $this->guard()->user())) {
return $response;
}
return $request->wantsJson()
? new Response('', 204)
: redirect()->intended($this->redirectPath());
}
/**
* The user has been authenticated.
*
* #param \Illuminate\Http\Request $request
* #param mixed $user
* #return mixed
*/
protected function authenticated(Request $request, $user)
{
$mode = $user->viewmode;
return redirect()->route($mode . '-mode');
}
/**
* Get the failed login response instance.
*
* #param \Illuminate\Http\Request $request
* #return \Symfony\Component\HttpFoundation\Response
*
* #throws \Illuminate\Validation\ValidationException
*/
protected function sendFailedLoginResponse(Request $request)
{
throw ValidationException::withMessages([
$this->username() => [trans('auth.failed')],
]);
}
/**
* Get the login username to be used by the controller.
*
* #return string
*/
public function username()
{
return 'username';
}
/**
* Log the user out of the application.
*
* #param \Illuminate\Http\Request $request
* #return \Illuminate\Http\Response
*/
public function logout(Request $request)
{
$this->guard()->logout();
$request->session()->invalidate();
$request->session()->regenerateToken();
if ($response = $this->loggedOut($request)) {
return $response;
}
return $request->wantsJson()
? new Response('', 204)
: redirect('/');
}
/**
* The user has logged out of the application.
*
* #param \Illuminate\Http\Request $request
* #return mixed
*/
protected function loggedOut(Request $request)
{
//
}
/**
* Get the guard to be used during authentication.
*
* #return \Illuminate\Contracts\Auth\StatefulGuard
*/
protected function guard()
{
return Auth::guard();
}
/**
* Where to redirect users after login.
*
* #var string
*/
protected $redirectTo = RouteServiceProvider::HOME;
/**
* Create a new controller instance.
*
* #return void
*/
public function __construct()
{
$this->middleware('guest')->except('logout');
}
}