The vulnerability CVE-2025-48136 in Estatik Mortgage Calculator arises from improper validation of filenames used in PHP include or require statements, enabling Local File Inclusion. This can allow attackers to include and execute arbitrary files within the web server context. The issue affects versions up to 2.0.12. The CVSS 3.1 vector (AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H) indicates network attack vector, high attack complexity, low privileges required, no user interaction, unchanged scope, and high impact on confidentiality, integrity, and availability.

Successful exploitation can lead to arbitrary code execution or disclosure of sensitive files on the server running the Estatik Mortgage Calculator plugin. This compromises the confidentiality, integrity, and availability of the affected system. The vulnerability requires low privileges but has a high attack complexity, reducing the likelihood of widespread exploitation without specific conditions.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider disabling the Estatik Mortgage Calculator plugin or restricting access to vulnerable endpoints to trusted users only. Monitor vendor communications for updates and apply patches promptly once available.