The Premium Addons for Elementor plugin for WordPress suffers from a stored cross-site scripting vulnerability (CWE-79) via the 'custom_svg' parameter. This vulnerability allows authenticated users with contributor or higher privileges to inject arbitrary JavaScript into pages due to improper input sanitization and output escaping. When other users access these pages, the injected scripts execute, potentially leading to session hijacking or other client-side attacks. The CVSS 3.1 base score is 5.4, reflecting a medium severity with network attack vector, low attack complexity, and requiring privileges and user interaction. No official patch or fix has been documented, and no known exploits have been reported.

Successful exploitation allows authenticated users with contributor-level access or above to inject persistent malicious scripts into web pages. These scripts execute in the context of users who view the compromised pages, potentially leading to theft of session tokens, defacement, or other client-side impacts. The vulnerability does not affect availability and requires user interaction. The impact is limited by the need for authenticated access and user interaction but can compromise confidentiality and integrity of user sessions.

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 limiting use of the 'custom_svg' parameter if possible. Monitor plugin updates from the vendor and apply official patches promptly once available.