# CVE-2020-36706: Simple:Press – WordPress Forum Plugin <= 6.6.0 - Arbitrary File Upload

> Attackers can upload arbitrary files to the server, potentially leading to remote code execution on sites using the Simple:Press WordPress forum plugin.

- **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:** 20 Oct 2023
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-fp5c-vf9m-6gv3

## What is CVE-2020-36706?

CVE-2020-36706 is a critical vulnerability in simplepress Simple:Press Forum, published on 20 Oct 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Simple:Press – WordPress Forum Plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the ~/admin/resources/jscript/ajaxupload/sf-uploader.php file in versions up to, and including, 6.6.0. This makes it possible for attackers to upload arbitrary files on the affected sites server which may make remote code execution possible.

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

## Which versions are affected by CVE-2020-36706?

It affects 1 product.


Products: Simple-Press Simple\.

## How do I fix CVE-2020-36706?

No fix has been published for CVE-2020-36706 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-36706 being exploited?

There is no known exploitation of CVE-2020-36706 in the wild and no public exploit code.

## Other vulnerabilities in simplepress Simple:Press Forum

- [CVE-2022-4030](https://insights.sbomify.com/CVE-2022-4030/): Simple:Press <= 6.8 - Authenticated (Subscriber+) Path Traversal to Arbitrary File Deletion (high 8.1)
- [CVE-2022-4027](https://insights.sbomify.com/CVE-2022-4027/): Simple:Press <= 6.8 - Unauthenticated Stored Cross-Site Scripting via Forum Replies (high 7.2)
- [CVE-2022-4028](https://insights.sbomify.com/CVE-2022-4028/): Simple:Press <= 6.8 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Profile Signatures (medium 6.4)
- [CVE-2022-4029](https://insights.sbomify.com/CVE-2022-4029/): Simple:Press <= 6.8 - Reflected Cross-Site Scripting via Cookie Value (medium 4.7)
- [CVE-2022-4031](https://insights.sbomify.com/CVE-2022-4031/): Simple:Press <= 6.8 - Authenticated (Admin+) Path Traversal to Arbitrary File Modification (low 3.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-36706 and fix it if it is affected.

What it is: CVE-2020-36706 is a critical vulnerability in simplepress Simple:Press Forum, published on 20 Oct 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-36706 in the wild and no public exploit code.

Affected product: simplepress Simple:Press Forum. 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-2020-36706/ (Markdown: https://insights.sbomify.com/CVE-2020-36706/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-36706
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-36706
- OSV: https://osv.dev/vulnerability/CVE-2020-36706

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-36706/
Summaries are generated and may contain mistakes; the official description above is the record.