Release Date: March 03, 2016
Component Type: Third party extension. This extension is not a part of the TYPO3 default installation.
Affected Versions: version 1.0.0 and below
Vulnerability Type: Cross-Site Scripting
Severity: Medium
Suggested CVSS v2.0: AV:N/AC:L/Au:S/C:P/I:P/A:N/E:F/RL:U/RC:C (What's that?)
Problem Description: This extension is a fork from the extension weeaar_googlesitemap.As the original extension this fork is susceptible to Cross-Site Scripting.
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 failed in providing a security fix for the reported vulnerability in a decent amount of time. Please uninstall and delete the extension from your installation.
Credits: Credits go to Frederic Gaus who reported the vulnerability.
General advice: Follow the recommendations that are given in the TYPO3 Security Guide. Please subscribe to the typo3-announce mailing list to receive future Security Bulletins via E-mail.