{"id":"CVE-2018-11784","published":"2018-10-04T13:00:00Z","modified":"2026-10-15T17:21:32Z","title":"When the default servlet in Apache Tomcat versions 9.0.0.M1 to 9.0.11, 8.5.0 to 8.5.33 and 7.0.23 to 7.0.90 returned a…","vendor":"Apache Software Foundation","product":"Apache Tomcat","tier":"core","eol":null,"affectedVersions":[{"vendor":"Apache Software Foundation","product":"Apache Tomcat","versions":["9.0.0.M1 to 9.0.11","8.5.0 to 8.5.33","7.0.23 to 7.0.90"]}],"description":{"text":"When the default servlet in Apache Tomcat versions 9.0.0.M1 to 9.0.11, 8.5.0 to 8.5.33 and 7.0.23 to 7.0.90 returned a redirect to a directory (e.g. redirecting to '/foo/' when the user requested '/foo') a specially crafted URL could be used to cause the redirect to be generated to any URI of the attackers choice.","provenance":"source","from":"CVE.org"},"summary":{"text":"The default servlet in Apache Software Foundation's Apache Tomcat, in the affected 9.0.0.M1 to 9.0.11, 8.5.0 to 8.5.33 and 7.0.23 to 7.0.90 branches, is flawed in how it generates directory redirects.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-29T07:17:58Z"},"cvss":null,"epss":{"score":0.9768,"percentile":0.99903,"date":"2026-10-28","provenance":"source"},"kev":null,"vulncheckKev":null,"exploited":false,"otx":{"pulseCount":0,"pulses":[],"provenance":"machine"},"cwes":[],"references":[{"url":"https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html","tags":["x_refsource_CONFIRM"]},{"url":"https://lists.apache.org/thread.html/23134c9b5a23892a205dc140cdd8c9c0add233600f76b313dda6bd75%40%3Cannounce.tomcat.apache.org%3E","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://security.netapp.com/advisory/ntap-20181014-0002/","tags":["x_refsource_CONFIRM"]},{"url":"http://www.securityfocus.com/bid/105524","tags":["vdb-entry","x_refsource_BID"]},{"url":"https://access.redhat.com/errata/RHSA-2019:0131","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2019:0485","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2019:0130","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://lists.debian.org/debian-lts-announce/2018/10/msg00005.html","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://usn.ubuntu.com/3787-1/","tags":["vendor-advisory","x_refsource_UBUNTU"]},{"url":"https://lists.debian.org/debian-lts-announce/2018/10/msg00006.html","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://lists.apache.org/thread.html/eb6efa8d59c45a7a9eff94c4b925467d3b3fec8ba7697f3daa314b04%40%3Cdev.tomcat.apache.org%3E","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org%3E","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://lists.apache.org/thread.html/388a323769f1dff84c9ec905455aa73fbcb20338e3c7eb131457f708%40%3Cdev.tomcat.apache.org%3E","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://lists.apache.org/thread.html/5c0e00fd31efc11e147bf99d0f03c00a734447d3b131ab0818644cdb%40%3Cdev.tomcat.apache.org%3E","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc%40%3Cdev.tomcat.apache.org%3E","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BZ4PX4B3QTKRM35VJAVIEOPZAF76RPBP/","tags":["vendor-advisory","x_refsource_FEDORA"]},{"url":"https://lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a%40%3Cdev.tomcat.apache.org%3E","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://lists.apache.org/thread.html/e85e83e9954f169bbb77b44baae5a33d8de878df557bb32b7f793661%40%3Cdev.tomcat.apache.org%3E","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://lists.apache.org/thread.html/845312a10aabbe2c499fca94003881d2c79fc993d85f34c1f5c77424%40%3Cdev.tomcat.apache.org%3E","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://lists.apache.org/thread.html/1dd0a59c1295cc08ce4c9e7edae5ad2268acc9ba55adcefa0532e5ba%40%3Cdev.tomcat.apache.org%3E","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://lists.apache.org/thread.html/3d19773b4cf0377db62d1e9328bf9160bf1819f04f988315086931d7%40%3Cdev.tomcat.apache.org%3E","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://lists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3%40%3Cdev.tomcat.apache.org%3E","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html","tags":["x_refsource_MISC"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00030.html","tags":["vendor-advisory","x_refsource_SUSE"]},{"url":"https://access.redhat.com/errata/RHSA-2019:1529","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://kc.mcafee.com/corporate/index?page=content&id=SB10284","tags":["x_refsource_CONFIRM"]},{"url":"https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html","tags":["x_refsource_MISC"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00056.html","tags":["vendor-advisory","x_refsource_SUSE"]},{"url":"https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html","tags":["x_refsource_MISC"]},{"url":"https://www.debian.org/security/2019/dsa-4596","tags":["vendor-advisory","x_refsource_DEBIAN"]},{"url":"https://seclists.org/bugtraq/2019/Dec/43","tags":["mailing-list","x_refsource_BUGTRAQ"]},{"url":"https://www.oracle.com/security-alerts/cpujan2020.html","tags":["x_refsource_MISC"]},{"url":"https://lists.apache.org/thread.html/r6ccee4e849bc77df0840c7f853f6bd09d426f6741247da2b7429d5d9%40%3Cdev.tomcat.apache.org%3E","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://lists.apache.org/thread.html/r3bbb800a816d0a51eccc5a228c58736960a9fffafa581a225834d97d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<8.5.34",">=7.0.23, <7.0.91",">=9.0.0, <9.0.12"],"patched":["8.5.34","7.0.91","9.0.12"],"from":["GHSA-5q99-f34m-67gc"],"provenance":"source"}],"advisories":[{"id":"GHSA-5q99-f34m-67gc","url":"https://github.com/advisories/GHSA-5q99-f34m-67gc","severity":"MODERATE","ecosystem":"Maven","package":"org.apache.tomcat.embed:tomcat-embed-core","vulnerableRanges":[">=8.5.0, <8.5.34"],"patched":["8.5.34"],"provenance":"source","from":"GHSA"},{"id":"GHSA-5q99-f34m-67gc","url":"https://github.com/advisories/GHSA-5q99-f34m-67gc","severity":"MODERATE","ecosystem":"Maven","package":"org.apache.tomcat.embed:tomcat-embed-core","vulnerableRanges":[">=7.0.23, <7.0.91"],"patched":["7.0.91"],"provenance":"source","from":"GHSA"},{"id":"GHSA-5q99-f34m-67gc","url":"https://github.com/advisories/GHSA-5q99-f34m-67gc","severity":"MODERATE","ecosystem":"Maven","package":"org.apache.tomcat.embed:tomcat-embed-core","vulnerableRanges":[">=9.0.0, <9.0.12"],"patched":["9.0.12"],"provenance":"source","from":"GHSA"}],"euvd":{"id":"EUVD-2018-0512","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2018-0512","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[{"id":50118,"url":"https://www.exploit-db.com/exploits/50118","title":"Apache Tomcat 9.0.0.M1 - Open Redirect","type":"webapps","platform":"multiple","date":"2021-07-13","verified":false,"provenance":"source"}],"exploitSources":{"exploitdb":{"count":1,"earliest":"2021-07-13"},"pocGithub":{"count":1,"skipped":0,"earliest":"2024-05-27","earliestUrl":"https://github.com/Cappricio-Securities/CVE-2018-11784","repos":[{"name":"Cappricio-Securities/CVE-2018-11784","url":"https://github.com/Cappricio-Securities/CVE-2018-11784","stars":0,"created":"2024-05-27"}]},"nuclei":[{"id":"CVE-2018-11784","name":"Apache Tomcat - Open Redirect","severity":"medium","path":"http/cves/2018/CVE-2018-11784.yaml","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2018/CVE-2018-11784.yaml"}],"first":{"date":"2021-07-13","source":"Exploit-DB","url":"https://www.exploit-db.com/exploits/50118"},"provenance":"source"},"exploitRefs":["http://packetstormsecurity.com/files/163456/Apache-Tomcat-9.0.0M1-Open-Redirect.html"],"flow":[],"timeline":[{"date":"2018-10-04","kind":"published","label":"Published (CVE.org)","url":"https://www.cve.org/CVERecord?id=CVE-2018-11784","provenance":"source"},{"date":"2021-07-13","kind":"exploit-public","label":"First public exploit: Exploit-DB (EDB-50118); later: PoC-in-GitHub 2024-05-27","url":"https://www.exploit-db.com/exploits/50118","provenance":"source"}],"speed":{"daysToPublicExploit":1013,"firstExploitFrom":"Exploit-DB","daysToKev":null},"priority":{"score":25.0,"factors":[{"name":"In a KEV catalog","points":0.0,"detail":"not listed"},{"name":"Recent KEV listing","points":0.0,"detail":"not listed"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.98,"detail":"percentile 0.9990"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"1 Exploit-DB entry; 1 NVD exploit link; 1 PoC-in-GitHub repo; 1 nuclei template"},{"name":"Mentioned in OTX pulses","points":0.0,"detail":"0 pulses"},{"name":"CVSS severity","points":0.0,"detail":"no CVSS"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]},"lineage":{"packageHistory":[{"cve":"CVE-2018-8014","published":"2018-05-16","fixed":"9.0.9","kev":false},{"cve":"CVE-2018-8034","published":"2018-08-01","fixed":"9.0.10","kev":false,"link":{"from":"CVE-2018-8034","to":"CVE-2018-11784","relation":"successor","confidence":"low","kind":"sequence","evidence":[{"kind":"version-step","provenance":"source","package":"Maven:org.apache.tomcat.embed:tomcat-embed-core","fromFixed":"7.0.90","toFixed":"7.0.91","daysApart":64}]}},{"cve":"CVE-2018-8037","published":"2018-08-02","fixed":"9.0.10","kev":false,"link":{"from":"CVE-2018-8037","to":"CVE-2018-11784","relation":"successor","confidence":"low","kind":"sequence","evidence":[{"kind":"version-step","provenance":"source","package":"Maven:org.apache.tomcat.embed:tomcat-embed-core","fromFixed":"8.5.32","toFixed":"8.5.34","daysApart":63},{"kind":"version-step","provenance":"source","package":"Maven:org.apache.tomcat.embed:tomcat-embed-core","fromFixed":"9.0.10","toFixed":"9.0.12","daysApart":63}]}},{"cve":"CVE-2018-11784","published":"2018-10-04","fixed":"9.0.12","kev":false},{"cve":"CVE-2019-0199","published":"2019-04-10","fixed":"9.0.16","kev":false,"link":{"from":"CVE-2018-11784","to":"CVE-2019-0199","relation":"successor","confidence":"low","kind":"sequence","evidence":[{"kind":"version-step","provenance":"source","package":"Maven:org.apache.tomcat.embed:tomcat-embed-core","fromFixed":"8.5.34","toFixed":"8.5.38","daysApart":188},{"kind":"version-step","provenance":"source","package":"Maven:org.apache.tomcat.embed:tomcat-embed-core","fromFixed":"9.0.12","toFixed":"9.0.16","daysApart":188}]}},{"cve":"CVE-2019-0221","published":"2019-05-28","fixed":"9.0.17","kev":false,"link":{"from":"CVE-2018-11784","to":"CVE-2019-0221","relation":"successor","confidence":"low","kind":"sequence","evidence":[{"kind":"version-step","provenance":"source","package":"Maven:org.apache.tomcat.embed:tomcat-embed-core","fromFixed":"7.0.91","toFixed":"7.0.94","daysApart":236}]}},{"cve":"CVE-2019-0232","published":"2019-04-15","fixed":"9.0.17","kev":false,"link":{"from":"CVE-2018-11784","to":"CVE-2019-0232","relation":"successor","confidence":"low","kind":"sequence","evidence":[{"kind":"version-step","provenance":"source","package":"Maven:org.apache.tomcat.embed:tomcat-embed-core","fromFixed":"7.0.91","toFixed":"7.0.94","daysApart":193}]}}],"package":"Maven:org.apache.tomcat.embed:tomcat-embed-core"}}