[MEDIUM] SS-2017-002: Member disclosure in login form

PKSA-7nk4-stp5-bg39 GHSA-p5h2-vr99-xm99

Affected package: silverstripe/framework

Affected version: >=3.4.0,<3.4.6|>=3.5.0,<3.5.4

Reported by:
GitHub, FriendsOfPHP/security-advisories