CVE-2018-1304

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.

Published: 2018-02-28 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-1304 is rated Moderate Risk (62.5/100): CVSS Medium severity, with high exploitation likelihood (EPSS 17.72%, 97th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +14.68% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2018-1304

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 3.04% 17.72% +14.68%
2 2026-04-29 2.08% 3.04% +0.96%
3 2026-03-28 — 2.08% —

Full EPSS history (51 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-1304

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.9 3.0 MEDIUM
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.2 3.6 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2018-1304

GitHub Security Advisory for CVE-2018-1304

GHSA-6rxj-58jh-436r · Severity: medium · Ecosystem: maven — Apache Tomcat unauthorized access vulnerability

OS Trackers for CVE-2018-1304

vendor priority summary link
debian unimportant CVE-2018-1304 unimportant priority: Debian including 1 source packages (tomcat9), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2018-1304
redhat medium — https://access.redhat.com/security/cve/CVE-2018-1304
suse medium CVE-2018-1304 severity moderate: SUSE including 64 source package names (tomcat-7.0.76-9.el7, tomcat-7.0.90-7.23.1, …), 151 product×package rows across 18 product lines (SUSE Liberty Linux 7, SUSE Linux Enterprise High Performance Computing 12 SP5, … (18 product lines)): Fixed 150, Known Not Affected 1. https://www.suse.com/security/cve/CVE-2018-1304/
ubuntu medium CVE-2018-1304 medium priority: Ubuntu including 3 source packages (tomcat7, tomcat8, tomcat8.0), 54 status rows across 18 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 41, not-affected 5, released 5, ignored 1, needed 1, needs-triage 1. https://ubuntu.com/security/CVE-2018-1304

Affected software / configurations for CVE-2018-1304

Vendor Product Version Raw CPE
apache tomcat >= 7.0.0, <= 7.0.84 cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
apache tomcat >= 8.0.0, <= 8.0.49 cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
apache tomcat >= 8.5.0, <= 8.5.27 cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
apache tomcat >= 9.0.0, <= 9.0.4 cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
apache tomcat 8.0.0 cpe:2.3:a:apache:tomcat:8.0.0:rc1:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone1:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone10:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone11:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone12:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone13:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone14:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone15:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone16:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone17:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone18:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone19:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone2:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone20:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone21:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone22:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone23:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone24:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone25:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone26:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone27:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone3:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone4:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone5:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone6:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone7:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone8:*:*:*:*:*:*
apache tomcat 9.0.0 cpe:2.3:a:apache:tomcat:9.0.0:milestone9:*:*:*:*:*:*
redhat jboss_enterprise_application_platform 6 cpe:2.3:a:redhat:jboss_enterprise_application_platform:6:*:*:*:*:*:*:*
redhat jboss_enterprise_application_platform 6.4 cpe:2.3:a:redhat:jboss_enterprise_application_platform:6.4:*:*:*:*:*:*:*
redhat jboss_enterprise_web_server 3.0.0 cpe:2.3:a:redhat:jboss_enterprise_web_server:3.0.0:*:*:*:*:*:*:*
debian debian_linux 7.0 cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
canonical ubuntu_linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 17.10 cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
canonical ubuntu_linux 18.04 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
oracle fusion_middleware 12.2.1.3.0 cpe:2.3:a:oracle:fusion_middleware:12.2.1.3.0:*:*:*:*:*:*:*
oracle hospitality_guest_access 4.2.0 cpe:2.3:a:oracle:hospitality_guest_access:4.2.0:*:*:*:*:*:*:*
oracle hospitality_guest_access 4.2.1 cpe:2.3:a:oracle:hospitality_guest_access:4.2.1:*:*:*:*:*:*:*
oracle micros_relate_crm_software 11.4 cpe:2.3:a:oracle:micros_relate_crm_software:11.4:*:*:*:*:*:*:*
oracle secure_global_desktop 5.3 cpe:2.3:a:oracle:secure_global_desktop:5.3:*:*:*:*:*:*:*
oracle secure_global_desktop 5.4 cpe:2.3:a:oracle:secure_global_desktop:5.4:*:*:*:*:*:*:*
redhat jboss_middleware 1 cpe:2.3:a:redhat:jboss_middleware:1:*:*:*:*:*:*:*

References for CVE-2018-1304

URL Tags
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html Patch Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html Patch Third Party Advisory
http://www.securityfocus.com/bid/103170 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1040427 Third Party Advisory VDB 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%3E
https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/388a323769f1dff84c9ec905455aa73fbcb20338e3c7eb131457f708%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/3d19773b4cf0377db62d1e9328bf9160bf1819f04f988315086931d7%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/5c0e00fd31efc11e147bf99d0f03c00a734447d3b131ab0818644cdb%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/845312a10aabbe2c499fca94003881d2c79fc993d85f34c1f5c77424%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/b1d7e2425d6fd2cebed40d318f9365b44546077e10949b01b1f8a0fb%40%3Cannounce.tomcat.apache.org%3E
https://lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/e85e83e9954f169bbb77b44baae5a33d8de878df557bb32b7f793661%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/eb6efa8d59c45a7a9eff94c4b925467d3b3fec8ba7697f3daa314b04%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/r3bbb800a816d0a51eccc5a228c58736960a9fffafa581a225834d97d%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/r48c1444845fe15a823e1374674bfc297d5008a5453788099ea14caf0%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/r6ccee4e849bc77df0840c7f853f6bd09d426f6741247da2b7429d5d9%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/raba0fabaf4d56d4325ab2aca8814f0b30a237ab83d8106b115ee279a%40%3Cdev.tomcat.apache.org%3E
https://lists.debian.org/debian-lts-announce/2018/03/msg00004.html Issue Tracking Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/06/msg00008.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00044.html Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20180706-0001/ Patch Third 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 Patch Third Party Advisory
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
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