This vulnerability is a reflected XSS in the login page of SourceCodester Zoo Management System v1.0. The 'msg' parameter is improperly handled, allowing an attacker to inject malicious scripts that are reflected back to the user. This can lead to execution of arbitrary scripts in the context of the victim's browser session. The CVSS 3.1 vector indicates the attack requires no privileges, has low attack complexity, requires user interaction, and impacts confidentiality and integrity with no impact on availability.

Successful exploitation can allow an attacker to execute arbitrary scripts in the victim's browser, potentially leading to theft of sensitive information such as session tokens or other data accessible to the browser. The impact is limited to confidentiality and integrity, with no direct impact on system availability. There are no known exploits in the wild at this time.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should avoid clicking on suspicious links containing crafted 'msg' parameters. Application developers should implement proper input validation and output encoding on the 'msg' parameter to prevent script injection.