Component Type: TYPO3 CMS
Release Date: February 23, 2016
Vulnerable subcomponent: CSS styled content
Vulnerability Type: Cross-Site Scripting
Affected Versions: Versions 6.2.0 to 6.2.18 and 7.6.0 to 7.6.3
Severity: Medium
Suggested CVSS v2.0: AV:N/AC:L/Au:S/C:P/I:P/A:P/E:P/RL:O/RC:C
CVE: not assigned yet
Problem Description: Failing to properly encode user input, the CSS styled content component is susceptible to Cross-Site Scripting, allowing authenticated editors to inject arbitrary HTML or JavaScript.
Solution: Update to TYPO3 versions 6.2.19 or 7.6.4 that fix the problem described.
Credits: Thanks to Jakub Galczyk who discovered and reported the issue.
General Advice: Follow the recommendations that are given in the TYPO3 Security Guide. Please subscribe to the typo3-announce mailing list.
General Note: All security related code changes are tagged so that you can easily look them up on our review system.