TYPO3 Formhandler Extension Cross Site Scripting Vulnerability

The Formhandler extension for TYPO3 is prone to a cross-site scripting vulnerability because it fails to properly sanitize user-supplied input.

An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This may let the attacker steal cookie-based authentication credentials and launch other attacks.

Typo3 Formhandler 2.4.0 and prior versions are vulnerable.


Bugtraq ID: 101935
Class: Input Validation Error
Remote: Yes
Local: No
Published: Nov 07 2017 12:00AM
Updated: Nov 07 2017 12:00AM
Credit: Till Maas
Vulnerable: Typo3 Formhandler 2.4
Typo3 Formhandler 1.6.1
Typo3 Formhandler 1.6
Typo3 Formhandler 1.4.1
Typo3 Formhandler 1.4
Typo3 Formhandler 2.3.1
Typo3 Formhandler 2.3.0
Typo3 Formhandler 2.0.2
Typo3 Formhandler 1.6.2

Not Vulnerable: Typo3 Formhandler 2.4.1


Attackers can exploit this issue by enticing an unsuspecting user into following a malicious URI.

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