[MEDIUM] SS-2015-028: Missing security check on dev/build/defaults

PKSA-tdvc-fx4y-y9yf GHSA-4h54-vwx9-3vr3

Affected package: silverstripe/framework

Affected version: >=3.1.0,<=3.1.16|>=3.2.0,<=3.2.1|>3.2,<3.3.0

Reported by:
GitHub, FriendsOfPHP/security-advisories