[HIGH] SilverStripe Folders migrated from 3.x may be unsafe to upload to

PKSA-b4jh-m6fk-qfqf CVE-2020-9280 GHSA-592m-4533-rxq9

Affected package: silverstripe/framework

Affected version: >=4.0.0,<4.4.6

Reported by:
GitHub