---
title: "TYPO3-SA-2010-021: TYPO3 Security Bulletin"
url: "https://news.typo3.com/security/advisory/typo3-sa-2010-021"
description: It has been discovered that the extension powermail (powermail) is vulnerable to Cross-Site Scripting.
image: "https://news.typo3.com/_assets/d1e01514e4c4a5b3147940fa2ec50682/Images/og-image-news.jpg"
date: 2026-06-11
modified: 2026-06-11
categories:
  - Security
---

# TYPO3-SA-2010-021: TYPO3 Security Bulletin

- [Security](https://news.typo3.com/article/category/security-1)

TYPO3-SA-2010-021: TYPO3 Security Bulletin
==========================================

26 October 2010

![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 powermail (powermail) is vulnerable to Cross-Site Scripting.

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

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

**Affected Versions:** Version 1.5.4 and below

**Vulnerability Type:** Cross-Site Scripting

**Severity:** Low

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

**Release Date:** 26.10.2010

**Problem Description:** Because of improper input validation and output encoding, powermail is susceptible to reflective Cross-Site Scripting. Exploitation requires an authenticated TYPO3 editor to follow a crafted malicious link.

**Solution:** An updated version 1.5.5 is available from the TYPO3 extension manager and at [typo3.org/extensions/repository/view/powermail/1.5.5/](http://typo3.org/extensions/repository/view/powermail/1.5.5/). Users of the extension are advised to update the extension as soon as possible.

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

**Credits:** Credits go to Jeremy Lebourdais who discovered and reported the issues.

![](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)