--- id: CVE-2018-11784 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 redirect to a directory (e.g summary: >- 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 … severity: medium cvss: 4.3 cvssVector: 'CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N' cwe: - CWE-601 vendor: apache product: tomcat affected: - 'tomcat >= 7.0.23, <= 7.0.90' - 'tomcat >= 8.5.0, <= 8.5.33' - 'tomcat >= 9.0.1, <= 9.0.11' - tomcat = 9.0.0 - debian_linux = 8.0 - ubuntu_linux = 14.04 - ubuntu_linux = 16.04 - snap_creator_framework - enterprise_linux_desktop = 7.0 - enterprise_linux_server = 7.0 - enterprise_linux_server = 7.6 - enterprise_linux_server_aus = 7.6 - enterprise_linux_server_eus = 7.6 - enterprise_linux_server_tus = 7.6 - enterprise_linux_workstation = 7.0 - communications_application_session_controller = 3.7.1 - communications_application_session_controller = 3.8.0 - hospitality_guest_access = 4.2.0 - hospitality_guest_access = 4.2.1 - instantis_enterprisetrack = 17.1 - instantis_enterprisetrack = 17.2 - instantis_enterprisetrack = 17.3 - retail_order_broker = 5.1 - retail_order_broker = 5.2 - retail_order_broker = 15.0 - secure_global_desktop = 5.4 published: '2018-10-04' updated: '2026-10-15' sourceUpdated: '2026-10-15T18:17:08.530' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2018-11784' references: - url: 'http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00030.html' label: security@apache.org - url: 'http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00056.html' label: security@apache.org - url: >- http://packetstormsecurity.com/files/163456/Apache-Tomcat-9.0.0M1-Open-Redirect.html label: security@apache.org - url: 'http://www.securityfocus.com/bid/105524' label: security@apache.org - url: 'https://access.redhat.com/errata/RHSA-2019:0130' label: security@apache.org - url: 'https://access.redhat.com/errata/RHSA-2019:0131' label: security@apache.org - url: 'https://access.redhat.com/errata/RHSA-2019:0485' label: security@apache.org - url: 'https://access.redhat.com/errata/RHSA-2019:1529' label: security@apache.org - url: 'https://kc.mcafee.com/corporate/index?page=content&id=SB10284' label: security@apache.org - url: >- https://lists.apache.org/thread.html/1dd0a59c1295cc08ce4c9e7edae5ad2268acc9ba55adcefa0532e5ba%40%3Cdev.tomcat.apache.org%3E label: security@apache.org - url: >- https://lists.apache.org/thread.html/23134c9b5a23892a205dc140cdd8c9c0add233600f76b313dda6bd75%40%3Cannounce.tomcat.apache.org%3E label: security@apache.org - url: >- https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org%3E label: security@apache.org - url: >- https://lists.apache.org/thread.html/388a323769f1dff84c9ec905455aa73fbcb20338e3c7eb131457f708%40%3Cdev.tomcat.apache.org%3E label: security@apache.org - url: >- https://lists.apache.org/thread.html/3d19773b4cf0377db62d1e9328bf9160bf1819f04f988315086931d7%40%3Cdev.tomcat.apache.org%3E label: security@apache.org - url: >- https://lists.apache.org/thread.html/5c0e00fd31efc11e147bf99d0f03c00a734447d3b131ab0818644cdb%40%3Cdev.tomcat.apache.org%3E label: security@apache.org - url: >- https://lists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3%40%3Cdev.tomcat.apache.org%3E label: security@apache.org - url: >- https://lists.apache.org/thread.html/845312a10aabbe2c499fca94003881d2c79fc993d85f34c1f5c77424%40%3Cdev.tomcat.apache.org%3E label: security@apache.org - url: >- https://lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a%40%3Cdev.tomcat.apache.org%3E label: security@apache.org - url: >- https://lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc%40%3Cdev.tomcat.apache.org%3E label: security@apache.org - url: >- https://lists.apache.org/thread.html/e85e83e9954f169bbb77b44baae5a33d8de878df557bb32b7f793661%40%3Cdev.tomcat.apache.org%3E label: security@apache.org - url: >- https://lists.apache.org/thread.html/eb6efa8d59c45a7a9eff94c4b925467d3b3fec8ba7697f3daa314b04%40%3Cdev.tomcat.apache.org%3E label: security@apache.org - url: >- https://lists.apache.org/thread.html/r3bbb800a816d0a51eccc5a228c58736960a9fffafa581a225834d97d%40%3Cdev.tomcat.apache.org%3E label: security@apache.org - url: >- https://lists.apache.org/thread.html/r48c1444845fe15a823e1374674bfc297d5008a5453788099ea14caf0%40%3Cdev.tomcat.apache.org%3E label: security@apache.org - url: >- https://lists.apache.org/thread.html/r6ccee4e849bc77df0840c7f853f6bd09d426f6741247da2b7429d5d9%40%3Cdev.tomcat.apache.org%3E label: security@apache.org - url: >- https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c%40%3Cdev.tomcat.apache.org%3E label: security@apache.org - url: >- https://lists.apache.org/thread.html/raba0fabaf4d56d4325ab2aca8814f0b30a237ab83d8106b115ee279a%40%3Cdev.tomcat.apache.org%3E label: security@apache.org - url: 'https://lists.debian.org/debian-lts-announce/2018/10/msg00005.html' label: security@apache.org - url: 'https://lists.debian.org/debian-lts-announce/2018/10/msg00006.html' label: security@apache.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BZ4PX4B3QTKRM35VJAVIEOPZAF76RPBP/ label: security@apache.org - url: 'https://seclists.org/bugtraq/2019/Dec/43' label: security@apache.org - url: 'https://security.netapp.com/advisory/ntap-20181014-0002/' label: security@apache.org - url: 'https://usn.ubuntu.com/3787-1/' label: security@apache.org - url: 'https://www.debian.org/security/2019/dsa-4596' label: security@apache.org - url: 'https://www.oracle.com/security-alerts/cpuapr2020.html' label: security@apache.org - url: 'https://www.oracle.com/security-alerts/cpujan2020.html' label: security@apache.org - url: >- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html label: security@apache.org - url: >- https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html label: security@apache.org - url: >- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html label: security@apache.org - url: >- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html label: security@apache.org - url: 'http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00030.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00056.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: >- http://packetstormsecurity.com/files/163456/Apache-Tomcat-9.0.0M1-Open-Redirect.html label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www.securityfocus.com/bid/105524' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2019:0130' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2019:0131' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2019:0485' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2019:1529' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://kc.mcafee.com/corporate/index?page=content&id=SB10284' label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/1dd0a59c1295cc08ce4c9e7edae5ad2268acc9ba55adcefa0532e5ba%40%3Cdev.tomcat.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/23134c9b5a23892a205dc140cdd8c9c0add233600f76b313dda6bd75%40%3Cannounce.tomcat.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/388a323769f1dff84c9ec905455aa73fbcb20338e3c7eb131457f708%40%3Cdev.tomcat.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/3d19773b4cf0377db62d1e9328bf9160bf1819f04f988315086931d7%40%3Cdev.tomcat.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/5c0e00fd31efc11e147bf99d0f03c00a734447d3b131ab0818644cdb%40%3Cdev.tomcat.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3%40%3Cdev.tomcat.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/845312a10aabbe2c499fca94003881d2c79fc993d85f34c1f5c77424%40%3Cdev.tomcat.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a%40%3Cdev.tomcat.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc%40%3Cdev.tomcat.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/e85e83e9954f169bbb77b44baae5a33d8de878df557bb32b7f793661%40%3Cdev.tomcat.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/eb6efa8d59c45a7a9eff94c4b925467d3b3fec8ba7697f3daa314b04%40%3Cdev.tomcat.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/r3bbb800a816d0a51eccc5a228c58736960a9fffafa581a225834d97d%40%3Cdev.tomcat.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/r48c1444845fe15a823e1374674bfc297d5008a5453788099ea14caf0%40%3Cdev.tomcat.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/r6ccee4e849bc77df0840c7f853f6bd09d426f6741247da2b7429d5d9%40%3Cdev.tomcat.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c%40%3Cdev.tomcat.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/raba0fabaf4d56d4325ab2aca8814f0b30a237ab83d8106b115ee279a%40%3Cdev.tomcat.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://lists.debian.org/debian-lts-announce/2018/10/msg00005.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://lists.debian.org/debian-lts-announce/2018/10/msg00006.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BZ4PX4B3QTKRM35VJAVIEOPZAF76RPBP/ label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://seclists.org/bugtraq/2019/Dec/43' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://security.netapp.com/advisory/ntap-20181014-0002/' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://usn.ubuntu.com/3787-1/' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.debian.org/security/2019/dsa-4596' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.oracle.com/security-alerts/cpuapr2020.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.oracle.com/security-alerts/cpujan2020.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html label: af854a3a-2127-422b-91ae-364da2661108 tags: - nvd - cve.org - exploit-available ssvc: exploitation: none automatable: 'no' technicalImpact: partial timestamp: '2025-06-04T14:25:28.780057Z' epss: 0.9768 epssPercentile: 0.99904 exploits: exploitdb: true github: 1 githubRepos: - 'https://github.com/Cappricio-Securities/CVE-2018-11784' nuclei: - CVE-2018-11784 checkedAt: '2026-10-15T18:24:32.190Z' exploitAvailable: true ingestedAt: '2026-10-15T18:23:58.396Z' --- ## Overview 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. ## Affected - `tomcat >= 7.0.23, <= 7.0.90` - `tomcat >= 8.5.0, <= 8.5.33` - `tomcat >= 9.0.1, <= 9.0.11` - `tomcat = 9.0.0` - `debian_linux = 8.0` - `ubuntu_linux = 14.04` - `ubuntu_linux = 16.04` - `snap_creator_framework` - `enterprise_linux_desktop = 7.0` - `enterprise_linux_server = 7.0` - `enterprise_linux_server = 7.6` - `enterprise_linux_server_aus = 7.6` - `enterprise_linux_server_eus = 7.6` - `enterprise_linux_server_tus = 7.6` - `enterprise_linux_workstation = 7.0` - `communications_application_session_controller = 3.7.1` - `communications_application_session_controller = 3.8.0` - `hospitality_guest_access = 4.2.0` - `hospitality_guest_access = 4.2.1` - `instantis_enterprisetrack = 17.1` - `instantis_enterprisetrack = 17.2` - `instantis_enterprisetrack = 17.3` - `retail_order_broker = 5.1` - `retail_order_broker = 5.2` - `retail_order_broker = 15.0` - `secure_global_desktop = 5.4` ## Remediation Refer to the linked advisories for vendor-supplied fixes and affected version ranges.