--- title: "TYPO3-EXT-SA-2013-006: Security Bypass Vulnerability in extension powermail (powermail)" url: "https://news.typo3.com/security/advisory/typo3-ext-sa-2013-006" description: "It has been discovered that the extension \"powermail\" (powermail) is susceptible to Security Bypass Vulnerability." 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-2013-006: Security Bypass Vulnerability in extension powermail (powermail) - Security / [TYPO3 Extensions](https://news.typo3.com/article/category/security/typo3-extensions) TYPO3-EXT-SA-2013-006: Security Bypass Vulnerability in extension powermail (powermail) ======================================================================================= 03 June 2013 ![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 susceptible to Security Bypass Vulnerability. - ![](https://news.typo3.com/typo3temp/assets/t3g/blog/gravatar/bbf959d8e683550c90ae922aff9145d8.jpeg)[Marcus Krause](https://news.typo3.com/article/author/marcus-krause) **Release Date:** June 03, 2013 **Component Type:** Third party extension. This extension is not a part of the TYPO3 default installation. **Affected Versions:** Version 1.6.9 and below, 2.0.1 - 2.0.6 **Vulnerability Type:** Security Bypass **Severity:** Low **Suggested CVSS v2.0:** [AV:N/AC:M/Au:N/C:N/I:P/A:N/E:POC/RL:O/RC:C](http://jvnrss.ise.chuo-u.ac.jp/jtg/cvss/cvss2.cgi?vector=(AV:N/AC:M/Au:N/C:N/I:P/A:N/E:P/RL:O/RC:C)&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")) **Problem Description:** Failing to invalidate used captcha codes, Powermail allows to use a single captcha code for multiple transmissions. And attacker could bypass further captcha checks by using the same captcha code. **Solution:** An updated version 1.6.10 is available from the TYPO3 extension manager and at [http://typo3.org/extensions/repository/download/powermail/1.6.10/t3x/](http://typo3.org/extensions/repository/download/powermail/1.6.10/t3x/ "Opens external link in new window"). An updated version 2.0.7 is available from the TYPO3 extension manager and at [http://typo3.org/extensions/repository/download/powermail/2.0.7/t3x/](http://typo3.org/extensions/repository/download/powermail/2.0.1/t3x/ "Opens external link in new window"). Users of the extension are advised to update the extension as soon as possible. **Credits:** Credits go to Oliver Meyfarth who discovered and reported this issue. **Update Note:** For TYPO3 4.5 use version 1.6.10 of powermail, for TYPO3 4.6/4.7 use version 2.0.7. Follow these steps if you want to update to version 1.6.10: In the extension manager go to "Import Extensions", search for "powermail" and the make a right-click on the extension entry, select "import versions for powermail". Then you will have the possibility to install version 1.6.10 **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)