CVE-2026-4912 Media Cleaner: Clean your WordPress! <= 7.0.3 - Authenticated (Administrator+) Server-Side Request Forgery
Authenticated administrators can exploit insufficient hostname validation to perform Server-Side Request Forgery, accessing internal services.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4912?
CVE-2026-4912 is a medium-severity server-side request forgery vulnerability in tigroumeow Media Cleaner: Clean your WordPress!, published on 28 Jul 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official 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.
Weakness: CWE-918
Which versions are affected by CVE-2026-4912?
How do I fix CVE-2026-4912?
No fix has been published for CVE-2026-4912 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-4912 being exploited?
There is no known exploitation of CVE-2026-4912 in the wild and no public exploit code.
Sources
Also known as GHSA-7xjc-3pfc-p9wj.