Release Date: December 18, 2017
Component Type: Third party extension. This extension is not a part of the TYPO3 default installation.
Affected Versions: version 8.8.0
Vulnerability Type: Authentication Bypass
CVE: not assigned yet
Problem Description: The extension is vulnerable to Authentication Bypass. Frontend users can be authenticated by only knowing their username.
Solution: An updated version 8.8.1 is available from the TYPO3 Extension Manager and at https://extensions.typo3.org/extension/download/sf_register/8.8.1/zip/. Users of the extension are advised to update the extension as soon as possible.
Credits: Credits go to Manuel Glauser and Sebastian Müller who discovered and reported the vulnerability.