{"id":"CVE-2016-5388","aliases":["GHSA-v646-rx6w-r3qq"],"url":"https://o3.security/vulnerability/CVE-2016-5388","summary":"Improper Access Control in Apache Tomcat","details":"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.","published":"2016-07-19T02:00:20.820Z","modified":"2026-07-08T05:48:40.571918018Z","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-catalina","fixedVersion":"7.0.72"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-catalina","fixedVersion":"8.5.5"}],"fix":{"url":"https://github.com/apache/tomcat/commit/1b91e91194a095ea922f96d1dccddf6fbc446e54","label":"apache/tomcat@1b91e91"},"references":[{"type":"WEB","url":"https://lists.apache.org/thread.html/053d9ce4d579b02203db18545fee5e33f35f2932885459b74d1e4272%40%3Cissues.activemq.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/6b414817c2b0bf351138911c8c922ec5dd577ebc0b9a7f42d705752d%40%3Cissues.activemq.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/6d3d34adcf3dfc48e36342aa1f18ce3c20bb8e4c458a97508d5bfed1%40%3Cissues.activemq.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r2853582063cfd9e7fbae1e029ae004e6a83482ae9b70a698996353dd%40%3Cusers.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rc6b2147532416cc736e68a32678d3947b7053c3085cf43a9874fd102%40%3Cusers.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rf21b368769ae70de4dee840a3228721ae442f1d51ad8742003aefe39%40%3Cusers.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2019/08/msg00015.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-updates/2016-09/msg00025.html"},{"type":"ADVISORY","url":"http://rhn.redhat.com/errata/RHSA-2016-1624.html"},{"type":"ADVISORY","url":"http://rhn.redhat.com/errata/RHSA-2016-2045.html"},{"type":"ADVISORY","url":"http://rhn.redhat.com/errata/RHSA-2016-2046.html"},{"type":"ADVISORY","url":"http://www.kb.cert.org/vuls/id/797896"},{"type":"ADVISORY","url":"http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html"},{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/91818"},{"type":"ADVISORY","url":"http://www.securitytracker.com/id/1036331"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2016:1635"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2016:1636"},{"type":"ADVISORY","url":"https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03770en_us"},{"type":"ADVISORY","url":"https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149"},{"type":"ADVISORY","url":"https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05324759"},{"type":"ADVISORY","url":"https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722"},{"type":"ADVISORY","url":"https://httpoxy.org/"},{"type":"ADVISORY","url":"https://tomcat.apache.org/tomcat-7.0-doc/changelog.html"},{"type":"ADVISORY","url":"https://www.apache.org/security/asf-httpoxy-response.txt"},{"type":"FIX","url":"http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2016-5388"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/1b91e91194a095ea922f96d1dccddf6fbc446e54"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/880250877b0643956435282afb9c111450cfff4c"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/fb3569fbb9a2f55459aa8e1e22bc35a737e66329"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2016:1624"},{"type":"WEB","url":"https://lists.apache.org/thread.html/6d3d34adcf3dfc48e36342aa1f18ce3c20bb8e4c458a97508d5bfed1@%3Cissues.activemq.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r2853582063cfd9e7fbae1e029ae004e6a83482ae9b70a698996353dd@%3Cusers.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rc6b2147532416cc736e68a32678d3947b7053c3085cf43a9874fd102@%3Cusers.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rf21b368769ae70de4dee840a3228721ae442f1d51ad8742003aefe39@%3Cusers.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.opensuse.org/opensuse-updates/2016-09/msg00025.html"},{"type":"WEB","url":"https://rhn.redhat.com/errata/RHSA-2016-1624.html"},{"type":"WEB","url":"https://rhn.redhat.com/errata/RHSA-2016-2045.html"},{"type":"WEB","url":"https://rhn.redhat.com/errata/RHSA-2016-2046.html"},{"type":"WEB","url":"https://www.kb.cert.org/vuls/id/797896"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2016:2045"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2016:2046"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2016-5388"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1353809"},{"type":"PACKAGE","url":"https://github.com/apache/tomcat"},{"type":"WEB","url":"https://lists.apache.org/thread.html/053d9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(EPSS)"],"lastVerified":"2026-07-08T05:48:40.571918018Z"}}