CVE-2021-21340

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CVSS 3.1

5.4 medium

EPSS

<1%p57

Published

Mar 23, 2021 (Mar 23, 2021)

Modified

Jun 17, 2026

Description

TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 10.4.14, 11.1.1 it has been discovered that database fields used as _descriptionColumn_ are vulnerable to cross-site scripting when their content gets previewed. A valid backend user account is needed to exploit this vulnerability. This is fixed in versions 10.4.14, 11.1.1 .

Vendors: typo3
Products: typo3
Weakness: CWE-79
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.9%)

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