The King Addons for Elementor plugin for WordPress suffers from a stored cross-site scripting vulnerability (CWE-79) due to improper neutralization of user input in certain widgets (Pricing Slider, Pricing Calculator, Image Accordion). This allows authenticated users with contributor-level privileges or higher to inject arbitrary scripts into pages, which execute when viewed by others. The vulnerability affects all versions up to and including 51.1.39. The CVSS 3.1 base score is 6.4, reflecting network attack vector, low attack complexity, privileges required, no user interaction, and impacts on confidentiality and integrity with scope changed. No patch or official vendor advisory is currently available, and no known active exploitation has been reported.

An attacker with contributor-level access or higher can inject persistent malicious scripts into pages via vulnerable widgets. These scripts execute in the context of users viewing the affected pages, potentially leading to unauthorized actions or data disclosure limited to confidentiality and integrity impacts. There is no reported impact on availability. The vulnerability could facilitate further attacks such as session hijacking or privilege escalation if combined with other vulnerabilities.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, limit contributor-level access to trusted users only. Consider disabling or avoiding use of the affected widgets (Pricing Slider, Pricing Calculator, Image Accordion) if possible. Monitor for updates from the King Addons vendor and apply patches promptly once available.