The vulnerability CVE-2026-7592 affects itsourcecode Courier Management System 1.0. It arises from improper sanitization of the ID argument in the /edit_staff.php file, allowing an attacker to perform SQL injection remotely without any privileges or user interaction. The CVSS 4.0 base score is 6.9 (medium), reflecting network attack vector, low complexity, no privileges required, no user interaction, and low to limited impact on confidentiality, integrity, and availability. No official fix or patch is currently documented, and the exploit code has been publicly disclosed.

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary SQL commands on the backend database, potentially leading to unauthorized data access or modification. The impact is rated medium due to limited confidentiality, integrity, and availability impact as per the CVSS vector. No evidence of exploitation in the wild has been reported.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider implementing input validation or web application firewall (WAF) rules to detect and block SQL injection attempts targeting the ID parameter in /edit_staff.php. Monitoring and restricting access to this endpoint may reduce exposure.