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CVE-2026-4912

4.1 · MEDIUM

The Media Cleaner: Clean your WordPress!

Published Jul 28, 2026CWE-918EPSS 0.41%

Overview

CVE-2026-4912 is a medium-severity vulnerability. It was published on July 28, 2026 and has a CVSS 3.1 base score of 4.1 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.1, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refplugins.trac.wordpress.org/browser/media-cleaner/tags/7.0.3/classes/core.php#L565Refplugins.trac.wordpress.org/browser/media-cleaner/tags/7.0.3/classes/core.php#L570Refplugins.trac.wordpress.org/browser/media-cleaner/tags/7.0.3/classes/rest.php#L118Refplugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&n%20ew3492257%40media-cleaner%2Ftrunk&old=3447443%40media-cleaner%2Ftrunk&sfp_ema%20il=&sfph_mail=Refwww.wordfence.com/threat-intel/vulnerabilities/id/e9c9214d-45d4-4477-8244-7802a4901114?source=cve

How CyberStrike helps

Frequently asked questions

What is CVE-2026-4912?

CVE-2026-4912 is a medium-severity vulnerability. It was published on July 28, 2026 and has a CVSS 3.1 base score of 4.1 (MEDIUM).

How severe is CVE-2026-4912?

This vulnerability has a CVSS 3.1 base score of 4.1, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-4912?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-4912?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-4912 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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