This vulnerability in phili67 Ecclesia CRM up to version 8.0.0 involves improper input validation in the ValidateInput function of the Query Viewer Component (/v2/query/view/). By manipulating the 'custom' argument, an attacker can inject SQL commands remotely, potentially compromising the database. The CVSS 4.0 base score is 5.3 (medium severity), reflecting network attack vector, low complexity, no privileges or user interaction required, and low to limited impact on confidentiality, integrity, and availability. No vendor fix or advisory has been published, and the vendor did not respond to early contact attempts. Exploit code is publicly available, but no confirmed exploitation in the wild has been reported.

Successful exploitation could allow an attacker to execute arbitrary SQL commands on the backend database, potentially leading to unauthorized data access or modification. However, the impact is rated as medium due to limited scope and low impact on confidentiality, integrity, and availability as per the CVSS vector. There is no evidence of active exploitation in the wild at this time.

No official patch or remediation is currently available from the vendor. Users should consider implementing input validation or web application firewall (WAF) rules to block malicious SQL injection attempts targeting the 'custom' parameter in the Query Viewer Component. Monitor for updates from the vendor and apply any future patches promptly. Since the vendor has not responded, organizations should evaluate risk and consider alternative mitigations or compensating controls.