--- id: CVE-2018-1304 title: >- The URL pattern of "" (the empty string) which exactly maps to the context root was not correctly handled in Apache Tomcat 9.0.0.M1 to 9.0.4, 8.5.0 to 8.5.27, 8.0.0.RC1 to 8.0.49 and 7.0.0 to 7.0.84 when used as part of a security constr… summary: >- The URL pattern of "" (the empty string) which exactly maps to the context root was not correctly handled in Apache Tomcat 9.0.0.M1 to 9.0.4, 8.5.0 to 8.5.27, 8.0.0.RC1 to 8.0.49 and 7.0.0 to 7.0.84 when used as part of a security constr… severity: medium cvss: 5.9 cvssVector: 'CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N' vendor: apache product: tomcat affected: - 'tomcat >= 7.0.0, <= 7.0.84' - 'tomcat >= 8.0.0, <= 8.0.49' - 'tomcat >= 8.5.0, <= 8.5.27' - 'tomcat >= 9.0.0, <= 9.0.4' - tomcat = 8.0.0 - tomcat = 9.0.0 - jboss_enterprise_application_platform = 6 - jboss_enterprise_application_platform = 6.4 - jboss_enterprise_web_server = 3.0.0 - debian_linux = 7.0 - debian_linux = 8.0 - debian_linux = 9.0 - ubuntu_linux = 14.04 - ubuntu_linux = 16.04 - ubuntu_linux = 17.10 - ubuntu_linux = 18.04 - fusion_middleware = 12.2.1.3.0 - hospitality_guest_access = 4.2.0 - hospitality_guest_access = 4.2.1 - micros_relate_crm_software = 11.4 - secure_global_desktop = 5.3 - secure_global_desktop = 5.4 - jboss_middleware = 1 published: '2018-02-28' updated: '2026-10-15' sourceUpdated: '2026-10-15T18:17:18.790' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2018-1304' references: - url: >- http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html label: security@apache.org - url: >- http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html label: security@apache.org - url: 'http://www.securityfocus.com/bid/103170' label: security@apache.org - url: 'http://www.securitytracker.com/id/1040427' label: security@apache.org - url: 'https://access.redhat.com/errata/RHSA-2018:0465' label: security@apache.org - url: 'https://access.redhat.com/errata/RHSA-2018:0466' label: security@apache.org - url: 'https://access.redhat.com/errata/RHSA-2018:1320' label: security@apache.org - url: 'https://access.redhat.com/errata/RHSA-2018:1447' label: security@apache.org - url: 'https://access.redhat.com/errata/RHSA-2018:1448' label: security@apache.org - url: 'https://access.redhat.com/errata/RHSA-2018:1449' label: security@apache.org - url: 'https://access.redhat.com/errata/RHSA-2018:1450' label: security@apache.org - url: 'https://access.redhat.com/errata/RHSA-2018:1451' label: security@apache.org - url: 'https://access.redhat.com/errata/RHSA-2018:2939' label: security@apache.org - url: 'https://access.redhat.com/errata/RHSA-2019:2205' 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/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/b1d7e2425d6fd2cebed40d318f9365b44546077e10949b01b1f8a0fb%40%3Cannounce.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/2018/03/msg00004.html' label: security@apache.org - url: 'https://lists.debian.org/debian-lts-announce/2018/06/msg00008.html' label: security@apache.org - url: 'https://lists.debian.org/debian-lts-announce/2018/07/msg00044.html' label: security@apache.org - url: 'https://security.netapp.com/advisory/ntap-20180706-0001/' label: security@apache.org - url: 'https://usn.ubuntu.com/3665-1/' label: security@apache.org - url: 'https://www.debian.org/security/2018/dsa-4281' label: security@apache.org - url: 'https://www.oracle.com/security-alerts/cpuapr2020.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/cpujul2019-5072835.html label: security@apache.org - url: >- http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html label: af854a3a-2127-422b-91ae-364da2661108 - url: >- http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www.securityfocus.com/bid/103170' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www.securitytracker.com/id/1040427' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2018:0465' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2018:0466' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2018:1320' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2018:1447' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2018:1448' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2018:1449' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2018:1450' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2018:1451' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2018:2939' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://access.redhat.com/errata/RHSA-2019:2205' 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/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/b1d7e2425d6fd2cebed40d318f9365b44546077e10949b01b1f8a0fb%40%3Cannounce.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/2018/03/msg00004.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://lists.debian.org/debian-lts-announce/2018/06/msg00008.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://lists.debian.org/debian-lts-announce/2018/07/msg00044.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://security.netapp.com/advisory/ntap-20180706-0001/' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://usn.ubuntu.com/3665-1/' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.debian.org/security/2018/dsa-4281' 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/technetwork/security-advisory/cpuapr2019-5072813.html label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html label: af854a3a-2127-422b-91ae-364da2661108 tags: - nvd - cve.org - exploit-available ssvc: exploitation: none automatable: 'yes' technicalImpact: partial timestamp: '2026-10-15T17:31:35.831075Z' epss: 0.1707 epssPercentile: 0.97044 exploits: github: 2 githubRepos: - 'https://github.com/knqyf263/CVE-2018-1304' - 'https://github.com/thariyarox/tomcat_CVE-2018-1304_testing' checkedAt: '2026-10-15T18:24:32.188Z' exploitAvailable: true ingestedAt: '2026-10-15T18:23:58.393Z' --- ## Overview The URL pattern of "" (the empty string) which exactly maps to the context root was not correctly handled in Apache Tomcat 9.0.0.M1 to 9.0.4, 8.5.0 to 8.5.27, 8.0.0.RC1 to 8.0.49 and 7.0.0 to 7.0.84 when used as part of a security constraint definition. This caused the constraint to be ignored. It was, therefore, possible for unauthorised users to gain access to web application resources that should have been protected. Only security constraints with a URL pattern of the empty string were affected. ## Affected - `tomcat >= 7.0.0, <= 7.0.84` - `tomcat >= 8.0.0, <= 8.0.49` - `tomcat >= 8.5.0, <= 8.5.27` - `tomcat >= 9.0.0, <= 9.0.4` - `tomcat = 8.0.0` - `tomcat = 9.0.0` - `jboss_enterprise_application_platform = 6` - `jboss_enterprise_application_platform = 6.4` - `jboss_enterprise_web_server = 3.0.0` - `debian_linux = 7.0` - `debian_linux = 8.0` - `debian_linux = 9.0` - `ubuntu_linux = 14.04` - `ubuntu_linux = 16.04` - `ubuntu_linux = 17.10` - `ubuntu_linux = 18.04` - `fusion_middleware = 12.2.1.3.0` - `hospitality_guest_access = 4.2.0` - `hospitality_guest_access = 4.2.1` - `micros_relate_crm_software = 11.4` - `secure_global_desktop = 5.3` - `secure_global_desktop = 5.4` - `jboss_middleware = 1` ## Remediation Refer to the linked advisories for vendor-supplied fixes and affected version ranges.