What the vulnerability does
01Description
The Starter Templates — Elementor, WordPress & Beaver Builder Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘custom_upload_mimes’ function in versions up to, and including, 4.2.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Explanation of Vulnerability in Simple Terms
02Summary
The Starter Templates plugin for Elementor and Gutenberg contains a stored cross-site scripting (XSS) vulnerability in versions up to 4.2.1. An authenticated user with low privileges can inject malicious scripts that execute in the browsers of other site visitors, potentially compromising their sessions or stealing data. The vulnerability affects the entire site scope due to how the plugin processes and stores user input.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that run in other users' browsers when they view affected pages.
Potential impact on your site
04Site Impact
Authenticated users can inject code affecting all site visitors; compromises user sessions and data integrity.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege account (e.g., subscriber or contributor) on the site.
Key dates
06Disclosure timeline
May 11, 2024
CVE published
April 8, 2026
Record updated
