This vulnerability (CWE-22) in Advanced Custom Fields PRO allows improper limitation of a pathname to a restricted directory, enabling PHP Local File Inclusion. An attacker with low privileges can exploit this to include local files, potentially leading to full system compromise. The issue affects all versions before 6.2.10. The CVSS 3.1 base score is 9.9, reflecting network attack vector, low attack complexity, no user interaction, and complete impact on confidentiality, integrity, and availability. No vendor advisory or patch information is currently available.

Successful exploitation can lead to local file inclusion, which may allow an attacker to execute arbitrary code, access sensitive files, and compromise the affected system's confidentiality, integrity, and availability. Given the critical CVSS score, the impact is severe. No known exploits have been reported so far.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to the affected plugin and limit user privileges to reduce exposure. Monitor vendor communications for updates on patches or official mitigations.