The Estatik Mortgage Calculator plugin versions up to and including 2.0.12 suffer from a Stored Cross-site Scripting vulnerability due to improper input neutralization during web page generation. This flaw allows attackers to inject malicious scripts that persist and execute in the context of users visiting affected pages. The CVSS 3.1 base score is 7.5, reflecting high impact with network attack vector, high privileges required, no user interaction needed, and full confidentiality, integrity, and availability impact. No patch or vendor advisory is currently available, and the product is not a cloud service.

Successful exploitation of this vulnerability could allow attackers to execute arbitrary scripts in the context of users' browsers, potentially leading to theft of sensitive information, session hijacking, or other malicious actions impacting confidentiality, integrity, and availability. The high CVSS score indicates significant risk if exploited. There are no known active exploits in the wild at this time.

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 limiting use of the affected Estatik Mortgage Calculator plugin versions. Implementing web application firewalls or input filtering may provide temporary mitigation but are not guaranteed to fully prevent exploitation.