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TYPO3-EXT-SA-2016-011: Cross-Site Scripting in extension "Formhandler" (formhandler)

It has been discovered that the extension "Formhandler" (formhandler) is susceptible to Cross-Site Scripting.

Release Date: May 27, 2016

Component Type: Third party extension. This extension is not a part of the TYPO3 default installation.

Affected Versions: version 2.3.0 and below

Vulnerability Type: Cross-Site Scripting

Severity: Low

Suggested CVSS v2.0: AV:N/AC:L/Au:N/C:N/I:P/A:N/E:F/RL:O/RC:C (What's that?)

Problem Description: The extension fails to properly sanitize user input and is vulnerable to Cross-Site Scripting.

Solution: Updated versions 2.3.1 and 2.0.2 are available from the TYPO3 Extension Manager and at http://typo3.org/extensions/repository/download/formhandler/2.3.1/t3x/ and http://typo3.org/extensions/repository/download/formhandler/2.0.2/t3x/. Users of the extension are advised to update the extension as soon as possible.

Credits: Credits go to Lubomir Stroetmann 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 to receive future Security Bulletins via E-mail.