---
title: "TYPO3-EXT-SA-2015-006: Arbitrary Code Execution in extension Frontend User Upload (feupload)"
url: "https://news.typo3.com/security/advisory/typo3-ext-sa-2015-006"
description: "It has been discovered that the extension \"Frontend User Upload\" (feupload) is susceptible to Arbitrary Code Execution"
image: "https://news.typo3.com/_assets/d1e01514e4c4a5b3147940fa2ec50682/Images/og-image-news.jpg"
date: 2026-06-11
modified: 2026-06-11
categories:
  - TYPO3 Extensions
---

# TYPO3-EXT-SA-2015-006: Arbitrary Code Execution in extension Frontend User Upload (feupload)

- Security / [TYPO3 Extensions](https://news.typo3.com/article/category/security/typo3-extensions)

TYPO3-EXT-SA-2015-006: Arbitrary Code Execution in extension Frontend User Upload (feupload)
============================================================================================

15 June 2015

![A laptop screen displaying a list of security advisories](https://news.typo3.com/typo3temp/assets/_processed_/d/c/csm_security_blog_default_77f8e86036.webp)

It has been discovered that the extension "Frontend User Upload" (feupload) is susceptible to Arbitrary Code Execution

- ![](https://news.typo3.com/typo3temp/assets/t3g/blog/gravatar/bbf959d8e683550c90ae922aff9145d8.jpeg)[Marcus Krause](https://news.typo3.com/article/author/marcus-krause)

**Release Date:** June 15, 2015

**Component Type:** Third party extension. This extension is not a part of the TYPO3 default installation.

**Affected Versions:**  version 0.5.0 and below

**Vulnerability Type:** Arbitrary Code Execution

**Severity:** Critical

**Suggested CVSS v2.0:** [AV:N/AC:L/Au:N/C:C/I:C/A:C/E:F/RL:U/RC:C](http://jvnrss.ise.chuo-u.ac.jp/jtg/cvss/cvss2.cgi?vector=%28AV:N/AC:L/Au:N/C:C/I:C/A:C/E:F/RL:U/RC:C%29&g=2&lang=en "CVSS calculator") ([What's that?](http://buzz.typo3.org/teams/security/article/use-of-common-vulnerability-scoring-system-in-typo3-security-advisories/ "Blog post on CVSS usage"))

**CVE:** not assigned yet

**Problem Description:** The extension feupload offers the possibility to upload files by using a frontend form. It was discovered that it is possible to upload all kind of files (e.g. PHP) which can be executed afterwards by knowing the filename and guessing the upload folder (which is fileadmin by default).

**Solution:** Versions of this extension that are known to be vulnerable will no longer be available for download from the TYPO3 Extension Repository. The extension author is no longer maintaining this extension. Please uninstall and delete the extension folder from your installation.

**Credits:** Credits go to Torben Hansen who discovered and reported the issue.

**General advice:** Follow the recommendations that are given in the [TYPO3 Security Guide](http://docs.typo3.org/typo3cms/SecurityGuide/ "Initiates file download"). Please subscribe to the [typo3-announce mailing list](http://lists.typo3.org/cgi-bin/mailman/listinfo/typo3-announce "Opens external link in new window") to receive future Security Bulletins via E-mail.

![](https://news.typo3.com/typo3temp/assets/t3g/blog/gravatar/b5c88386e5b1d8fca79d0652427922d2.jpeg)

About the Author

[Marcus Krause](https://news.typo3.com/article/author/marcus-krause)

[More posts by this author](https://news.typo3.com/article/author/marcus-krause)