CVE-2026-102388: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in WPMU DEV Forminator

This vulnerability in WPMU DEV Forminator is due to improper neutralization of input during web page generation, leading to stored cross-site scripting (XSS). It affects all versions from initial release up to and including 1.57.3. The CVSS 3.1 vector indicates network attack vector, low attack complexity, no privileges required, user interaction required, scope changed, and impacts on confidentiality, integrity, and availability. No vendor advisory or patch information is provided, so remediation status is unknown.

Successful exploitation could allow an attacker to inject malicious scripts that execute in the context of users interacting with the vulnerable Forminator plugin, potentially leading to data theft, session hijacking, or disruption of service. The CVSS score of 7.1 reflects high impact on confidentiality, integrity, and availability.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch is available, consider restricting user input or applying web application firewall (WAF) rules to detect and block XSS payloads relevant to Forminator forms.