This vulnerability arises from insufficient validation of filenames in PHP include/require statements within the ThemeREX Healer WordPress theme. It allows an attacker to perform Local File Inclusion (LFI), potentially leading to arbitrary code execution or disclosure of sensitive files. The affected versions include all versions up to and including 1.0.0. The CVSS 3.1 base score is 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), reflecting network attack vector, low attack complexity, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability.

Successful exploitation can lead to full compromise of the affected WordPress site, including unauthorized disclosure of sensitive information, modification of data, and denial of service. The critical CVSS score reflects the severity of these impacts. No known exploits have been reported in the wild so far.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider disabling or removing the vulnerable theme to prevent exploitation. Monitor vendor channels for updates and apply patches promptly once available.