Laravel before 5.5.10 mishandles the remember_me token verification process because DatabaseUserProvider does not have constant-time token comparison.

References

• https://nvd.nist.gov/vuln/detail/CVE-2017-14775
• laravel/framework#21320
• https://github.com/laravel/framework/releases/tag/v5.5.10
• https://laravel-news.com/laravel-v5-5-11
• https://github.com/FriendsOfPHP/security-advisories/blob/master/illuminate/auth/CVE-2017-14775.yaml
• https://github.com/FriendsOfPHP/security-advisories/blob/master/laravel/framework/CVE-2017-14775.yaml