Over the last decade, there has been a considerable growth in the use of web-based applications that process sensitive data, such as personal, financial, and medical data. As the use of such applications has grown, the security of such applications has become increasingly important in ensuring the data's safety, integrity, and validity. Web applications can be run from an internet browser without the need to download or establish, however these require modules. Modern web applications allow users to access data from any location at any time. As a result, Hackers will be able to access the information. In this paper, we try to demonstrate the security issues in the web application followed by the OWASP Security Standards.