The LA-Studio Element Kit for Elementor plugin suffers from a stored XSS vulnerability (CWE-79) due to improper neutralization of user-supplied input in the Post Author widget. Authenticated attackers with contributor or higher privileges can inject arbitrary JavaScript that executes in the context of any user viewing the compromised page. This vulnerability affects all versions up to and including 1.3.7.5. 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.

Successful exploitation allows an attacker with contributor-level access to inject persistent malicious scripts into pages, which execute in the browsers of users who view those pages. This can lead to unauthorized actions performed on behalf of users, data theft, or session hijacking. The impact is limited to confidentiality and integrity with no direct availability impact. 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 an official fix is released, restrict contributor-level access to trusted users only and consider disabling or removing the vulnerable widget to prevent exploitation.