CVE-2021-21340 Information

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 .

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Reference

https://typo3.org/security/advisory/typo3-core-sa-2021-007 https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-fjh3-g8gq-9q92 https://packagist.org/packages/typo3/cms-backend

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

5.4