CVE-2016-5388

mediumpriority · attend · 50EPSS 0.509 · 99 %ileDEEUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

50.9% (99th) EPSS

CVSS 5.1 · medium

Is it mine?

38 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

Apache Tomcat 7.x through 7.0.70 and 8.x through 8.5.4, when the CGI Servlet is enabled, 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 "A mitigation is planned for future releases of Tomcat, tracked as CVE-2016-5388"; in other words, this is not a CVE ID for a vulnerability.

cvss

Technical severity, 0–10. One row per scoring source.

8.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.1–8.1

v2.05.1mediumAV:N/AC:H/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 4.9 · impact 6.4

v3.08.1highCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.2 · impact 5.9

v3.08.1highCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · OSV

v3.08.1highCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-284USprimaryCWE-284US

affected products (38)

Products and version ranges known to be affected.

Apache HTTP Serverall versionscert_bundDEcpe:/a:apache:http_server:-
Apache Tomcatall versionscert_bundDEcpe:/a:apache:tomcat:-
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
EMC VNXall versionscert_bundDEcpe:/h:emc:vnx:-
HPE HP-UXall versionscert_bundDEcpe:/o:hp:hp-ux:-
Open Source CentOSall versionscert_bundDEcpe:/o:centos:centos:-
Open Source PHPall versionscert_bundDEcpe:/a:php:php:-
Open Source Pythonall versionscert_bundDEcpe:/a:python:python:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Red Hat JBoss Web Serverall versionscert_bundDEcpe:/a:redhat:jboss_enterprise_web_server:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
SUSE Linux Enterprise Desktop 12 SP1all versionscert_bundDEcpe:/o:suse:linux_enterprise_desktop:12:sp1
SUSE Linux Enterprise Server 12 SP1all versionscert_bundDEcpe:/o:suse:linux_enterprise_server:12:sp1
SUSE openSUSEall versionscert_bundDEcpe:/o:suse:opensuse:-
TYPO3 Core <8.2.1all versionscert_bundDE
Ubuntu Linux 10.04 LTSall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:10.04:-:lts
TYPO3 Core< 8.2.1cert_bundDE
n/a n/a≤ n/aenisa_euvdEU
apache tomcat6.0 → 6.0.45nvdUScpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
apache tomcat7.0 → 7.0.70nvdUScpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*

showing 20 of 38

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2025-2522Mehrere Webserver: Schwachstelle ermöglicht Umgehen von SicherheitsvorkehrungenDeutsch2016-07-18csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in mehreren Webserver Produkten ausnutzen, um Sicherheitsvorkehrungen zu umgehen.
GHSA-v646-rx6w-r3qqImproper Access Control in Apache Tomcat2022-05-13ghsa · osvUS
Apache Tomcat 7.x through 7.0.70 and 8.x through 8.5.4, when the CGI Servlet is enabled, 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 "A mitigation is planned for future releases of Tomcat, tracked as CVE-2016-5388"; in other words, this is not a CVE ID for a vulnerability.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd osv NVD CVE.org MITRE

published 2016-07-19modified 2026-10-15

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+13826 more

references (87)

External citations — patches, advisories, analysis.

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