Final answer:
The vulnerability present in the web application is broken authentication.
Step-by-step explanation:
The vulnerability present in the web application, based on the security team's findings, is broken authentication.
Broken authentication refers to weaknesses in the authentication process that allows unauthorized users to gain access to the application. It could be due to weak passwords, session management issues, or improper handling of authentication credentials.
To fix this vulnerability, the web development team should strengthen the authentication mechanisms, enforce strong password policies, implement secure session management techniques, and ensure proper handling of authentication credentials.