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Vulnerability record · CVE-2018-1304 · published 28 February 2018

CVE-2018-1304: Apache tomcat vulnerability

Apache · Tomcat

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.

5.9 CVSS 3.0 Medium EPSS 17% · top 3.0%
5.9CVSS 3.0 base score, v2 4.3
17%EPSS exploitation probability, 30 days
NoNot in CISA KEV
10Affected product versions listed by NVD
80References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

10 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html PatchThird Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html PatchThird Party Advisory
http://www.securityfocus.com/bid/103170 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1040427 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2018:0465 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0466 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1320 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1447 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1448 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1449 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1450 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1451 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2939 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2205
https://lists.apache.org/thread.html/1dd0a59c1295cc08ce4c9e7edae5ad2268acc9ba55adcefa0532e5ba%40%3Cdev.tomcat.apache.org
https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org
https://lists.apache.org/thread.html/388a323769f1dff84c9ec905455aa73fbcb20338e3c7eb131457f708%40%3Cdev.tomcat.apache.org
https://lists.apache.org/thread.html/3d19773b4cf0377db62d1e9328bf9160bf1819f04f988315086931d7%40%3Cdev.tomcat.apache.org
https://lists.apache.org/thread.html/5c0e00fd31efc11e147bf99d0f03c00a734447d3b131ab0818644cdb%40%3Cdev.tomcat.apache.org
https://lists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3%40%3Cdev.tomcat.apache.org
https://lists.apache.org/thread.html/845312a10aabbe2c499fca94003881d2c79fc993d85f34c1f5c77424%40%3Cdev.tomcat.apache.org
https://lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a%40%3Cdev.tomcat.apache.org
https://lists.apache.org/thread.html/b1d7e2425d6fd2cebed40d318f9365b44546077e10949b01b1f8a0fb%40%3Cannounce.tomcat.apach
https://lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc%40%3Cdev.tomcat.apache.org
https://lists.apache.org/thread.html/e85e83e9954f169bbb77b44baae5a33d8de878df557bb32b7f793661%40%3Cdev.tomcat.apache.org
https://lists.apache.org/thread.html/eb6efa8d59c45a7a9eff94c4b925467d3b3fec8ba7697f3daa314b04%40%3Cdev.tomcat.apache.org
https://lists.apache.org/thread.html/r3bbb800a816d0a51eccc5a228c58736960a9fffafa581a225834d97d%40%3Cdev.tomcat.apache.or
https://lists.apache.org/thread.html/r48c1444845fe15a823e1374674bfc297d5008a5453788099ea14caf0%40%3Cdev.tomcat.apache.or
https://lists.apache.org/thread.html/r6ccee4e849bc77df0840c7f853f6bd09d426f6741247da2b7429d5d9%40%3Cdev.tomcat.apache.or
https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c%40%3Cdev.tomcat.apache.or
https://lists.apache.org/thread.html/raba0fabaf4d56d4325ab2aca8814f0b30a237ab83d8106b115ee279a%40%3Cdev.tomcat.apache.or
https://lists.debian.org/debian-lts-announce/2018/03/msg00004.html Issue TrackingThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/06/msg00008.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00044.html Mailing ListThird Party Advisory
https://security.netapp.com/advisory/ntap-20180706-0001/ PatchThird Party Advisory
https://usn.ubuntu.com/3665-1/ Third Party Advisory
https://www.debian.org/security/2018/dsa-4281 Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2020.html
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html PatchThird Party Advisory
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html

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Source: NIST National Vulnerability Database (record CVE-2018-1304), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.