### [CVE-2021-33563](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33563) ![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue) ![](https://img.shields.io/static/v1?label=Version&message=n%2Fa%20&color=brightgreen) ![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brightgreen) ### Description Koel before 5.1.4 lacks login throttling, lacks a password strength policy, and shows whether a failed login attempt had a valid username. This might make brute-force attacks easier. ### POC #### Reference - https://huntr.dev/bounties/1-other-koel/koel/ #### Github No PoCs found on GitHub currently.