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Vulnerability of TYPO3 Bootstrap Package: Cross Site Scripting

Synthesis of the vulnerability 

An attacker can trigger a Cross Site Scripting of TYPO3 Bootstrap Package, in order to run JavaScript code in the context of the web site.
Vulnerable systems: TYPO3 Extensions ~ not comprehensive.
Severity of this threat: 2/4.
Creation date: 27/04/2021.
Références of this weakness: CVE-2021-21365, TYPO3-EXT-SA-2021-007, VIGILANCE-VUL-35180.

Description of the vulnerability 

An attacker can trigger a Cross Site Scripting of TYPO3 Bootstrap Package, in or...
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This threat bulletin impacts software or systems such as TYPO3 Extensions ~ not comprehensive.

Our Vigil@nce team determined that the severity of this computer threat bulletin is medium.

The trust level is of type confirmed by the editor, with an origin of document.

An attacker with a expert ability can exploit this computer threat.

Solutions for this threat 

This vulnerability workaround will be public soon.
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