CVSS 3.1
8.1 highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-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 vendor states "This mitigation has been assigned the identifier CVE-2016-5387"; in other words, this is not a CVE ID for a vulnerability.
Severity
- EPSS
- 56% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-31)
- Published
- Modified
- Record from
- the NVD, synced
Affected
- apache:http_server
- canonical:ubuntu_linux
- debian:debian_linux
- fedoraproject:fedora
- hp:system_management_homepage
- opensuse:leap
- opensuse:opensuse
- oracle:communications_user_data_repository
- oracle:enterprise_manager_ops_center
- oracle:linux
- oracle:solaris
- redhat:enterprise_linux_desktop
- redhat:enterprise_linux_eus
- redhat:enterprise_linux_server
- redhat:enterprise_linux_server_aus
- redhat:enterprise_linux_server_tus
- redhat:enterprise_linux_workstation
- redhat:jboss_core_services
- redhat:jboss_enterprise_web_server
- redhat:jboss_web_server