A vulnerability was found in SourceCodester Human Resource Management System 1.0. It has been rated as critical. This issue affects some unknown processing of the file /hrm/employeeadd.php. The manipulation of the argument empid leads to sql injection. The CWE definition for the vulnerability is CWE-89. The weakness was published 12/03/2022 by Ngo Van Tu. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2022-4278. The attack may be initiated remotely. Technical details are available. Furthermore, there is an exploit available. The exploit has been disclosed to the public and may be used. The pricing for an exploit might be around USD $0-$5k at the moment. The attack technique deployed by this issue is T1505 according to MITRE ATT&CK. It is declared as proof-of-concept. The exploit is available at github.com. We expect the 0-day to have been worth approximately $0-$5k. A possible mitigation has been published before and not just after the disclosure of the vulnerability.