All vulnerabilities

Servers and applications

CVE-2016-5387

The Apache HTTP Server through 2.4.23 follows RFC 3875 section 4.1.18 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, aka an "httpoxy" issue. NOTE: the…

Severity
High 8.1
Published
19 Jul 2016
Last changed
17 Jun 2026
Added to UpHeron
17 Oct 2026
Sources
NVD

Affected software

SoftwareAffected versions
Apache HTTP ServerServers and applications · cpe:a:apache:http_server
  • From 2.2.0 up to 2.2.31
  • From 2.4.1 up to 2.4.23

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2016-5387
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2016-5387