[MEDIUM] Insecure Unserialize in TYPO3 Backend

PKSA-p9pn-ckkr-j9gj GHSA-vgm8-r9gm-fw59

Affected package: typo3/cms

Affected version: >=6.2.0,<6.2.29|>=7.6.0,<7.6.13|>=8.0.0,<8.1.0|>=8.1.0,<8.2.0|>=8.2.0,<8.3.0|>=8.3.0,<8.4.0|>=8.4.0,<8.4.1

Reported by:
GitHub, FriendsOfPHP/security-advisories