[MEDIUM] TYPO3-CORE-SA-2021-007: Cross-Site Scripting in Content Preview

PKSA-hrdf-cmfs-zgg7 CVE-2021-21340 GHSA-fjh3-g8gq-9q92

Affected package: typo3/cms-core

Affected version: >=10.0.0,<10.4.14|>=11.0.0,<11.1.1

Reported by:
GitHub, FriendsOfPHP/security-advisories