[MEDIUM] CVE-2019-14273: Broken Access control on files

PKSA-g9hg-jbs3-qz4m CVE-2019-14273 GHSA-43jj-2rwc-2m3f

Affected package: silverstripe/framework

Affected version: >=4.0.0,<4.3.5|>=4.4.0,<4.4.4

Reported by:
GitHub, FriendsOfPHP/security-advisories