CVE-2026-57814 describes a DOM-based Cross-site Scripting (XSS) vulnerability in the Forminator plugin for WordPress by WPMU DEV. The issue arises from improper neutralization of input during web page generation, allowing an attacker to inject malicious scripts that execute in the context of the victim's browser. This vulnerability affects all versions of Forminator up to and including 1.55.0.1. The CVSS v3.1 score is 7.1, indicating a high severity with network attack vector, low attack complexity, no privileges required, user interaction required, and impacts on confidentiality, integrity, and availability. There is no vendor advisory or patch information available at this time, and no known exploits in the wild have been reported.

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary scripts in the context of the affected user's browser, potentially leading to partial disclosure of sensitive information, modification of data, or disruption of service. The CVSS score reflects partial impact on confidentiality, integrity, and availability.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should exercise caution with untrusted input and consider temporary mitigations such as disabling or restricting the use of the affected plugin. Monitor official WPMU DEV channels for updates.