[MEDIUM] Cross-Site Scripting in link validator component

PKSA-xpn2-bkrt-rhyf GHSA-hq37-rfjc-mr8h

Affected package: typo3/cms

Affected version: >=6.2.0,<6.2.18|>=7.6.0,<7.6.3

Reported by:
GitHub, FriendsOfPHP/security-advisories