TYPO3-CORE-SA-2016-021: Cross-Site Scripting in TYPO3 Backend
September 13, 2016
It has been discovered, that TYPO3 is vulnerable to Cross-Site Scripting
Component Type: TYPO3 CMS
Release Date: September 13, 2016
Vulnerability Type: Cross-Site Scripting
Affected Versions: 6.2.0 to 6.2.26, 7.6.0 to 7.6.10 and 8.0.0 to 8.3.0
Suggested CVSS v2.0: AV:N/AC:L/Au:S/C:P/I:P/A:N/E:F/RL:O/RC:C
CVE: not assigned yet
Problem Description: Failing to properly encode user input, the page module is vulnerable to Cross-Site Scripting. A valid backend user account with permissions to edit plugins is needed to exploit this vulnerability.
Solution: Update to TYPO3 versions 6.2.27, 7.6.11 or 8.3.1 that fix the problem described.
Credits: Thanks to Security Team Member Georg Ringer who discovered and reported the issue.
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