CVE-2026-4912

Description

The Media Cleaner: Clean your WordPress! plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 7.0.3. This is due to the `get_urls_from_html()` function using `DOMDocument::loadHTMLFile()` to fetch iframe source URLs with an insufficient hostname validation check that relies on a substring match against the site's server name. This makes it possible for authenticated attackers, with Administrator-level access and above, to make web requests to arbitrary locations originating from the web application, which can be used to query and interact with internal services.

References

• https://plugins.trac.wordpress.org/browser/media-cleaner/tags/7.0.3/classes/core.php#L565
• https://plugins.trac.wordpress.org/browser/media-cleaner/tags/7.0.3/classes/core.php#L570
• https://plugins.trac.wordpress.org/browser/media-cleaner/tags/7.0.3/classes/rest.php#L118
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&n%20ew3492257%40media-cleaner%2Ftrunk&old=3447443%40media-cleaner%2Ftrunk&sfp_ema%20il=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/e9c9214d-45d4-4477-8244-7802a4901114?source=cve