[LOW] CVE-2019-12617: Access escalation for CMS users with limited access through permission cache pollution

PKSA-5rys-h48p-tw2m CVE-2019-12617 GHSA-6r58-4xgr-gm6m

Affected package: silverstripe/framework

Affected version: >=4.3.0,<4.3.5|>=4.4.0,<4.4.4

Reported by:
GitHub, FriendsOfPHP/security-advisories