The ConvertForce Popup Builder plugin for WordPress suffers from a stored XSS vulnerability due to improper neutralization of input in the Gutenberg block's entrance_animation attribute. Authenticated attackers with Author-level privileges can inject arbitrary scripts that execute in the context of users visiting the affected pages. This vulnerability is present in all versions up to 0.0.7. The CVSS 3.1 vector indicates network attack vector, low attack complexity, privileges required at the level of an authenticated user with limited privileges, no user interaction required, and a scope change with low confidentiality and integrity impact but no availability impact.

An attacker with Author-level access or higher can inject malicious JavaScript code that executes in the browsers of users viewing the affected pages. This can lead to unauthorized actions such as session hijacking or data theft limited to the confidentiality and integrity of the affected site. There is no indication of availability impact. The vulnerability does not appear to be exploited in the wild as per current data.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict Author-level access to trusted users only and consider disabling or removing the ConvertForce Popup Builder plugin if possible. Monitor for updates from the vendor or plugin author regarding patches or mitigations.