VULNERABILITY INTELLIGENCE

CVE-2016-5385

CVSS score8.1 HIGH
EPSS probability50.43%
CISA KEVNot currently listed
Published2016-07-19
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

PHP through 7.0.8 does not attempt to address RFC 3875 section 4.1.18 namespace conflicts and therefore does not protect applications from the presence of untrusted client data in the HTTP_PROXY environment variable, which might allow remote attackers to redirect an application's outbound HTTP traffic to an arbitrary proxy server via a crafted Proxy header in an HTTP request, as demonstrated by (1) an application that makes a getenv('HTTP_PROXY') call or (2) a CGI configuration of PHP, aka an "httpoxy" issue.

Weakness classification

  • CWE-601: URL Redirection to Untrusted Site ('Open Redirect')

Primary references