[MEDIUM] SS-2015-010: XSS in Director::force_redirect()

PKSA-4bc1-163x-xfz9 GHSA-m2hh-2m46-x6j5

Affected package: silverstripe/framework

Affected version: >=3.1.0,<3.1.12

Reported by:
GitHub, FriendsOfPHP/security-advisories