--- title: "TYPO3-EXT-SA-2016-010: Missing Access Check in extension \"Frontend User Registration\" (sf_register)" url: "https://news.typo3.com/security/advisory/typo3-ext-sa-2016-010" description: "It has been discovered that the extension \"Frontend User Registration\" (sf_register) lacks a proper access check." 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-2016-010: Missing Access Check in extension "Frontend User Registration" (sf_register) - Security / [TYPO3 Extensions](https://news.typo3.com/article/category/security/typo3-extensions) TYPO3-EXT-SA-2016-010: Missing Access Check in extension "Frontend User Registration" (sf\_register) ==================================================================================================== 24 May 2016 ![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 Registration" (sf\_register) lacks a proper access check. - ![](https://news.typo3.com/typo3temp/assets/t3g/blog/gravatar/bbf959d8e683550c90ae922aff9145d8.jpeg)[Marcus Krause](https://news.typo3.com/article/author/marcus-krause) **Release Date:** May 24, 2016 **Component Type:** Third party extension. This extension is not a part of the TYPO3 default installation. **Affected Versions:** version 6.2.7 and below **Vulnerability Type:** Missing Access Check **Severity:** Critical **Suggested CVSS v2.0:** [AV:N/AC:M/Au:N/C:C/I:C/A:C/E:F/RL:O/RC:C](http://jvnrss.ise.chuo-u.ac.jp/jtg/cvss/cvss2.cgi?vector=%28AV:N/AC:M/Au:N/C:C/I:C/A:C/E:F/RL:O/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")) **Problem Description:** Failing to properly sanitize user input, the extension might be vulnerable to information disclosure or remote code execution. **Solution:** Updated versions 1.4.3, 6.0.4 and 6.2.8 are available from the TYPO3 Extension Manager and at [https://typo3.org/extensions/repository/download/sf\_register/1.4.3/t3x/](https://typo3.org/extensions/repository/download/sf_register/1.4.3/t3x/ "Opens external link in new window"), [https://typo3.org/extensions/repository/download/sf\_register/6.0.4/t3x/](https://typo3.org/extensions/repository/download/sf_register/6.0.4/t3x/ "Opens external link in new window") and [http://typo3.org/extensions/repository/download/sf\_register/6.2.8/t3x/](http://typo3.org/extensions/repository/download/sf_register/6.2.8/t3x/ "Opens external link in new window"). Users of the extension are advised to update the extension as soon as possible. **Note**: Further information can be found in the [TYPO3-CORE-SA-2016-013](https://typo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2016-013/) advisory. **Credits**: Credits go to Oliver Hader who discovered and reported the vulnerability. **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)