# CVE-2021-24236: Imagements <= 1.2.5 - Unauthenticated Arbitrary File Upload to RCE

> Unauthenticated attackers can upload arbitrary PHP files by spoofing Content-Type headers, leading to remote code execution on the WordPress site.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 May 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-vvjm-6792-4mj3

## What is CVE-2021-24236?

CVE-2021-24236 is a critical vulnerability in williewonka Imagements, published on 5 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Imagements WordPress plugin through 1.2.5 allows images to be uploaded in comments, however only checks for the Content-Type in the request to forbid dangerous files. This allows unauthenticated attackers to upload arbitrary files by using a valid image Content-Type along with a PHP filename and code, leading to RCE.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type)

## Which versions are affected by CVE-2021-24236?

It affects 1 product.


Products: Imagements Project Imagements.

## How do I fix CVE-2021-24236?

No fix has been published for CVE-2021-24236 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24236 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-24236 exists.

Public exploit code:

- WordPress Imagements <=1.2.5 - Arbitrary File Upload (nuclei): http/cves/2021/CVE-2021-24236.yaml

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24236 and fix it if it is affected.

What it is: CVE-2021-24236 is a critical vulnerability in williewonka Imagements, published on 5 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-24236 exists.

Affected product: williewonka Imagements. 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-2021-24236/ (Markdown: https://insights.sbomify.com/CVE-2021-24236/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24236
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24236
- OSV: https://osv.dev/vulnerability/CVE-2021-24236

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-24236/
Summaries are generated and may contain mistakes; the official description above is the record.