client_side.cc in Squid before 3.5.18 and 4.x before 4.0.10 does not properly ignore the Host header when absolute-URI is provided, which allows remote attackers to conduct cache-poisoning attacks via an HTTP request.
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- https://github.com/ARPSyndicate/cve-scores