{"cve":"CVE-2016-5388","nvd":{"published":"2016-07-19T02:00:20.820","modified":"2026-10-15T16:17:25.597","status":"Modified","description":"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_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.1},"cwes":["CWE-284"],"references":["http://lists.opensuse.org/opensuse-updates/2016-09/msg00025.html","http://rhn.redhat.com/errata/RHSA-2016-1624.html","http://rhn.redhat.com/errata/RHSA-2016-2045.html","http://rhn.redhat.com/errata/RHSA-2016-2046.html","http://www.kb.cert.org/vuls/id/797896"],"products":["apache:tomcat","hp:system_management_homepage","oracle:linux","redhat:enterprise_linux_desktop","redhat:enterprise_linux_hpc_node","redhat:enterprise_linux_hpc_node_eus","redhat:enterprise_linux_server","redhat:enterprise_linux_server_aus","redhat:enterprise_linux_server_eus","redhat:enterprise_linux_server_tus","redhat:enterprise_linux_workstation"],"source":"nvd","synced_at":"2026-10-19T20:38:51.654415212+00:00"},"epss":{"cve":"CVE-2016-5388","score":0.50896,"percentile":0.98919,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-v646-rx6w-r3qq","url":"https://osv.dev/vulnerability/GHSA-v646-rx6w-r3qq","summary":"Improper Access Control in Apache Tomcat","modified":"2024-03-11T05:31:42.891215Z","packages":[{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-catalina","purl":"pkg:maven/org.apache.tomcat/tomcat-catalina","ranges":[">=7.0.0 <7.0.72"],"fixed":["7.0.72"]},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-catalina","purl":"pkg:maven/org.apache.tomcat/tomcat-catalina","ranges":[">=8.0.0 <8.5.5"],"fixed":["8.5.5"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}