[HIGH] Fixed being bypassable of CVE-2019-6257 SSRF.

PKSA-g6pf-wn7z-5s1c CVE-2019-6257 GHSA-3qhm-qfj3-4rrx

Affected package: studio-42/elfinder

Affected version: <2.1.49

Reported by:
GitHub, FriendsOfPHP/security-advisories