# 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.

- **Severity:** Medium 4.1 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 28 Jul 2026
- **Updated:** 28 Jul 2026
- **Also known as:** GHSA-7xjc-3pfc-p9wj

## 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 (Server-Side Request Forgery)

## 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.

## Is CVE-2026-4912 being exploited?

There is no known exploitation of CVE-2026-4912 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-4912 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-4912 in the wild and no public exploit code.

Affected product: tigroumeow Media Cleaner: Clean your WordPress!. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-4912/ (Markdown: https://insights.sbomify.com/CVE-2026-4912/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-4912
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-4912
- OSV: https://osv.dev/vulnerability/CVE-2026-4912

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-4912/
Summaries are generated and may contain mistakes; the official description above is the record.