CVE-2026-3853

The Divi theme for WordPress is vulnerable to DOM-Based Stored Cross-Site Scripting via the image src attribute of the et pb video slider item shortcode in all versions up to, and including, 4.27.6. This is due to the image src field not being included in the $url options whitelist (which only contains url, button link, button url), so it never receives esc url raw() at save time. On the server side, the value is rendered into a data-image HTML attribute using esc attr(), which encodes double quotes as ". However, the client-side JavaScript carousel code in custom.unified.js reads this attribute using jQuery's .data('image'), which returns the browser-decoded value (with " decoded back to "). The decoded value is then concatenated directly into an HTML string and injected into the DOM via jQuery.after() without re-escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user hovers over the carousel thumbnail.