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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
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
CWEs
CWE-918
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.