This vulnerability affects SourceCodester Pharmacy Sales and Inventory System 1.0 and involves a cross-site scripting issue in the /index.php?page=users endpoint. By manipulating the 'Name' parameter, an attacker can inject malicious scripts that execute in the context of a victim's browser. The CVSS 4.0 base score is 4.8, indicating medium severity, with network attack vector, low attack complexity, and requiring user interaction and high privileges. No official fix or patch has been documented, and the vendor has not provided remediation details.

Successful exploitation allows an attacker to execute arbitrary scripts in the context of authenticated users with high privileges, potentially leading to session hijacking, defacement, or other client-side attacks. The vulnerability requires user interaction and high privileges, which limits its impact somewhat. There are no reports of active exploitation 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 apply input validation and output encoding on the 'Name' parameter to mitigate XSS risks. Restricting user privileges and educating users about phishing risks may reduce the likelihood of successful exploitation.