CVE-2021-21370 Information

Description

TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 7.6.51 8.7.40 9.5.25 10.4.14 11.1.1 it has been discovered that content elements of type menu are vulnerable to cross-site scripting when their referenced items get previewed in the page module. A valid backend user account is needed to exploit this vulnerability. This is fixed in versions 7.6.51 8.7.40 9.5.25 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-2021-008 https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-x7hc-x7fm-f7qh 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