[MEDIUM] SS-2018-015: Vulnerable dependency

PKSA-1bqf-6b5w-2tc1 GHSA-frm9-7pm9-5rgc

Affected version: >=1.3.0,<1.9.99|>=2.0.0,<2.9.99|>=3.0.0,<3.1.1

Reported by:
GitHub, FriendsOfPHP/security-advisories