The Gum Addon for Elementor plugin for WordPress suffers from a stored cross-site scripting vulnerability (CWE-79) due to improper neutralization of user-supplied input in the Price Table and Post Slider widgets. Authenticated users with contributor-level privileges or above can inject arbitrary JavaScript code that executes in the context of any user viewing the compromised page. This vulnerability affects all versions up to and including 1.3.4. The CVSS 3.1 base score is 6.4, reflecting network attack vector, low attack complexity, required privileges at the contributor level, no user interaction, and impacts on confidentiality and integrity but not availability. No patch or vendor advisory is currently provided, and the plugin is not a cloud service, so remediation depends on vendor updates or user action.

Successful exploitation allows an authenticated contributor or higher to inject persistent malicious scripts into pages using the vulnerable widgets. This can lead to unauthorized actions performed in the context of other users viewing the page, potentially compromising confidentiality and integrity of user data. Availability is not impacted. There are no known exploits in the wild at this time.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict contributor-level access to trusted users only and consider disabling or removing the vulnerable widgets (Price Table and Post Slider) to prevent exploitation. Monitor official vendor channels for updates or patches addressing this vulnerability.