[MEDIUM] CVE-2022-37421 - Stored XSS in custom meta tags

PKSA-vfdf-hjn1-7mdt CVE-2022-37421 GHSA-pp74-g2q5-j4jf

Affected package: silverstripe/cms

Affected version: >=4.0.0,<4.11.3

Reported by:
GitHub, FriendsOfPHP/security-advisories