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
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
- Feb 28, 2018
- Updated
- Jun 16, 2026
- EPSS
- 17.1% · 97th percentile
- CWE
- —
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Report tools
Action score
28
Monitor
Low priority for now.
- CVSS
- 23 / 40 · 5.9 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 5 / 30 · 17.1%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| apache | tomcat | cpe:2.3:a:apache:tomcat |
| redhat | jboss enterprise application platform | cpe:2.3:a:redhat:jboss_enterprise_application_platform |
| redhat | jboss enterprise web server | cpe:2.3:a:redhat:jboss_enterprise_web_server |
| redhat | enterprise linux | cpe:2.3:o:redhat:enterprise_linux |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
| canonical | ubuntu linux | cpe:2.3:o:canonical:ubuntu_linux |
| oracle | fusion middleware | cpe:2.3:a:oracle:fusion_middleware |
| oracle | hospitality guest access | cpe:2.3:a:oracle:hospitality_guest_access |
| oracle | micros relate crm software | cpe:2.3:a:oracle:micros_relate_crm_software |
| oracle | secure global desktop | cpe:2.3:a:oracle:secure_global_desktop |
| redhat | jboss middleware | cpe:2.3:a:redhat:jboss_middleware |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- apache tomcat7.0.0 and later · up to 7.0.84 inclusive
- apache tomcat8.0.0 and later · up to 8.0.49 inclusive
- apache tomcat8.5.0 and later · up to 8.5.27 inclusive
- apache tomcat9.0.0 and later · up to 9.0.4 inclusive
- apache tomcat8.0.0
- apache tomcat9.0.0
- canonical ubuntu linux14.04
- canonical ubuntu linux16.04
- canonical ubuntu linux17.10
- canonical ubuntu linux18.04
- debian debian linux7.0
- debian debian linux8.0
- debian debian linux9.0
- oracle fusion middleware12.2.1.3.0
- oracle hospitality guest access4.2.0
- oracle hospitality guest access4.2.1
- oracle micros relate crm software11.4
- oracle secure global desktop5.3
- oracle secure global desktop5.4
- redhat jboss enterprise application platform6
Versions reported by the vendor
Affected version ranges reported by the assigning authority (apache). Independent of NVD's CPE analysis and usually ahead of it.
Apache Software Foundation Apache Tomcat
- 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, 7.0.0 to 7.0.84affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:7 | tomcat7 | before 7.0.28-4+deb7u18 | 7.0.28-4+deb7u18 |
| Debian:8 | tomcat7 | before 7.0.56-3+really7.0.88-1 | 7.0.56-3+really7.0.88-1 |
| Debian:8 | tomcat8 | before 8.0.14-1+deb8u12 | 8.0.14-1+deb8u12 |
| Debian:9 | tomcat8 | before 8.5.14-1+deb9u3 | 8.5.14-1+deb9u3 |
| Maven | org.apache.tomcat.embed:tomcat-embed-core | from 7.0.0 · before 7.0.86 | 7.0.86 |
| Maven | org.apache.tomcat.embed:tomcat-embed-core | from 8.0.0 · before 8.0.51 | 8.0.51 |
| Maven | org.apache.tomcat.embed:tomcat-embed-core | from 8.5.0 · before 8.5.28 | 8.5.28 |
| Maven | org.apache.tomcat.embed:tomcat-embed-core | from 9.0.0 · before 9.0.5 | 9.0.5 |
| Red Hat:enterprise_linux:7::client | tomcat | before 0:7.0.76-9.el7 | 0:7.0.76-9.el7 |
| Red Hat:enterprise_linux:7::client | tomcat-admin-webapps | before 0:7.0.76-9.el7 | 0:7.0.76-9.el7 |
| Red Hat:enterprise_linux:7::client | tomcat-docs-webapp | before 0:7.0.76-9.el7 | 0:7.0.76-9.el7 |
| Red Hat:enterprise_linux:7::client | tomcat-el-2.2-api | before 0:7.0.76-9.el7 | 0:7.0.76-9.el7 |
| Red Hat:enterprise_linux:7::client | tomcat-javadoc | before 0:7.0.76-9.el7 | 0:7.0.76-9.el7 |
| Red Hat:enterprise_linux:7::client | tomcat-jsp-2.2-api | before 0:7.0.76-9.el7 | 0:7.0.76-9.el7 |
| Red Hat:enterprise_linux:7::client | tomcat-jsvc | before 0:7.0.76-9.el7 | 0:7.0.76-9.el7 |
| Red Hat:enterprise_linux:7::client | tomcat-lib | before 0:7.0.76-9.el7 | 0:7.0.76-9.el7 |
| Red Hat:enterprise_linux:7::client | tomcat-servlet-3.0-api | before 0:7.0.76-9.el7 | 0:7.0.76-9.el7 |
| Red Hat:enterprise_linux:7::client | tomcat-webapps | before 0:7.0.76-9.el7 | 0:7.0.76-9.el7 |
| Red Hat:jboss_enterprise_application_platform:6::el5 | codehaus-jackson | before 0:1.9.9-12.redhat_6.1.ep6.el5 | 0:1.9.9-12.redhat_6.1.ep6.el5 |
| Red Hat:jboss_enterprise_application_platform:6::el5 | codehaus-jackson-core-asl | before 0:1.9.9-12.redhat_6.1.ep6.el5 | 0:1.9.9-12.redhat_6.1.ep6.el5 |
| Red Hat:jboss_enterprise_application_platform:6::el5 | codehaus-jackson-jaxrs | before 0:1.9.9-12.redhat_6.1.ep6.el5 | 0:1.9.9-12.redhat_6.1.ep6.el5 |
| Red Hat:jboss_enterprise_application_platform:6::el5 | codehaus-jackson-mapper-asl | before 0:1.9.9-12.redhat_6.1.ep6.el5 | 0:1.9.9-12.redhat_6.1.ep6.el5 |
| Red Hat:jboss_enterprise_application_platform:6::el5 | codehaus-jackson-xc | before 0:1.9.9-12.redhat_6.1.ep6.el5 | 0:1.9.9-12.redhat_6.1.ep6.el5 |
| Red Hat:jboss_enterprise_application_platform:6::el5 | hornetq | before 0:2.3.25-26.SP24_redhat_1.1.ep6.el5 | 0:2.3.25-26.SP24_redhat_1.1.ep6.el5 |
+96
Same product
apache: all recordsOther highest-scoring records for the same primary product.
- CVE-2025-24813Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUTKEV99Now
- CVE-2016-8735Remote code execution is possible with Apache Tomcat before 6.0.48, 7.x before 7.0.73, 8.x before 8.0.39, 8.5.x before 8.5.7, and 9.x beforeKEV96Now
- CVE-2017-12617When running Apache Tomcat versions 9.0.0.M1 to 9.0.0, 8.5.0 to 8.5.22, 8.0.0.RC1 to 8.0.46 and 7.0.0 to 7.0.81 with HTTP PUTs enabled (e.g.KEV92Now
- CVE-2017-12615When running Apache Tomcat 7.0.0 to 7.0.79 on Windows with HTTP PUTs enabled (e.g.KEV92Now
- CVE-2026-34486Apache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptorKEV62This week
- CVE-2019-0232When running on Windows with enableCmdLineArguments enabled, the CGI Servlet in Apache Tomcat 9.0.0.M1 to 9.0.17, 8.5.0 to 8.5.39 and 7.0.0 62This week
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:tomcat7 | 7.0.28-4+deb7u18 · Debian:7 | Package registry (OSV) |
| debian:tomcat8 | 8.0.14-1+deb8u12 · Debian:8 | Package registry (OSV) |
| Maven:org.apache.tomcat.embed:tomcat-embed-core | 7.0.86 | Package registry (OSV) |
| Maven:org.apache.tomcat.embed:tomcat-embed-core | 8.0.51 | Package registry (OSV) |
| Maven:org.apache.tomcat.embed:tomcat-embed-core | 8.5.28 | Package registry (OSV) |
| Maven:org.apache.tomcat.embed:tomcat-embed-core | 9.0.5 | Package registry (OSV) |
| red hat:mod_cluster | 0:1.3.8-2.Final_redhat_2.1.ep7.el6 · Red Hat:jboss_enterprise_web_server:3.1::el6 | Package registry (OSV) |
| red hat:mod_cluster-tomcat7 | 0:1.3.8-2.Final_redhat_2.1.ep7.el6 · Red Hat:jboss_enterprise_web_server:3.1::el6 | Package registry (OSV) |
| red hat:mod_cluster-tomcat8 | 0:1.3.8-2.Final_redhat_2.1.ep7.el6 · Red Hat:jboss_enterprise_web_server:3.1::el6 | Package registry (OSV) |
| red hat:tomcat-native | 0:1.2.8-11.redhat_11.ep7.el6 · Red Hat:jboss_enterprise_web_server:3.1::el6 | Package registry (OSV) |
| red hat:tomcat-native-debuginfo | 0:1.2.8-11.redhat_11.ep7.el6 · Red Hat:jboss_enterprise_web_server:3.1::el6 | Package registry (OSV) |
| red hat:tomcat-vault | 0:1.1.6-1.Final_redhat_1.1.ep7.el6 · Red Hat:jboss_enterprise_web_server:3.1::el6 | Package registry (OSV) |
| red hat:tomcat-vault-tomcat7 | 0:1.1.6-1.Final_redhat_1.1.ep7.el6 · Red Hat:jboss_enterprise_web_server:3.1::el6 | Package registry (OSV) |
| red hat:tomcat-vault-tomcat8 | 0:1.1.6-1.Final_redhat_1.1.ep7.el6 · Red Hat:jboss_enterprise_web_server:3.1::el6 | Package registry (OSV) |
| red hat:tomcat7 | 0:7.0.70-25.ep7.el6 · Red Hat:jboss_enterprise_web_server:3.1::el6 | Package registry (OSV) |
| red hat:tomcat7-admin-webapps | 0:7.0.70-25.ep7.el6 · Red Hat:jboss_enterprise_web_server:3.1::el6 | Package registry (OSV) |
| red hat:tomcat7-docs-webapp | 0:7.0.70-25.ep7.el6 · Red Hat:jboss_enterprise_web_server:3.1::el6 | Package registry (OSV) |
| red hat:tomcat7-el-2.2-api | 0:7.0.70-25.ep7.el6 · Red Hat:jboss_enterprise_web_server:3.1::el6 | Package registry (OSV) |
| suse:tomcat | 8.0.50-29.8.2 · SUSE:Linux Enterprise Server for Raspberry Pi 12 SP2 | Package registry (OSV) |
| suse:tomcat6 | 6.0.53-0.57.7.1 · SUSE:Linux Enterprise Server 11 SP4 | Package registry (OSV) |
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Proof-of-concept repository on GitHub ×2
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Proof-of-concept repository on GitHub | stars:3 | 2018-02-24 |
| Proof-of-concept repository on GitHub | stars:0 | 2018-03-08 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- First PoC-5 d
- Published
- TodaySep 30, 2026+3136 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
—
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
- www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
- www.securityfocus.com/bid/103170
- www.securitytracker.com/id/1040427
- access.redhat.com/errata/RHSA-2018:0465
- access.redhat.com/errata/RHSA-2018:0466
- access.redhat.com/errata/RHSA-2018:1320
- access.redhat.com/errata/RHSA-2018:1447
- access.redhat.com/errata/RHSA-2018:1448
- access.redhat.com/errata/RHSA-2018:1449
- access.redhat.com/errata/RHSA-2018:1450
- access.redhat.com/errata/RHSA-2018:1451
- access.redhat.com/errata/RHSA-2018:2939
- access.redhat.com/errata/RHSA-2019:2205
- lists.apache.org/thread.html/1dd0a59c1295cc08ce4c9e7edae5ad2268acc9ba55adcefa0532e5ba%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/388a323769f1dff84c9ec905455aa73fbcb20338e3c7eb131457f708%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/3d19773b4cf0377db62d1e9328bf9160bf1819f04f988315086931d7%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/5c0e00fd31efc11e147bf99d0f03c00a734447d3b131ab0818644cdb%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3%40%3Cdev.tomcat.apache.org%3E
Vendor advisories and official records. Exploit/PoC links are deliberately left out.