The code in Apache Tomcat 9.0.0.M1 to 9.0.0.M11, 8.5.0 to 8.5.6, 8.0.0.RC1 to 8.0.38, 7.0.0 to 7.0.72, and 6.0.0 to 6.0.47 that parsed the H
The code in Apache Tomcat 9.0.0.M1 to 9.0.0.M11, 8.5.0 to 8.5.6, 8.0.0.RC1 to 8.0.38, 7.0.0 to 7.0.72, and 6.0.0 to 6.0.47 that parsed the HTTP request line permitted invalid characters. This could be exploited, in conjunction with a proxy that also permitted the invalid characters but with a different interpretation, to inject data into the HTTP response. By manipulating the HTTP response the attacker could poison a web-cache, perform an XSS attack and/or obtain sensitive information from requests other then their own.
- Published
- Mar 20, 2017
- Updated
- Jun 16, 2026
- EPSS
- 39.6% · 99th percentile
- CWE
- CWE-20
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Report tools
Action score
40
Plan
Add it to your regular patch cycle.
- CVSS
- 28 / 40 · 7.1 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 12 / 30 · 39.6%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| apache | tomcat | cpe:2.3:a:apache:tomcat |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- apache tomcat6.0.0
- apache tomcat6.0.1
- apache tomcat6.0.10
- apache tomcat6.0.11
- apache tomcat6.0.12
- apache tomcat6.0.13
- apache tomcat6.0.14
- apache tomcat6.0.15
- apache tomcat6.0.16
- apache tomcat6.0.17
- apache tomcat6.0.18
- apache tomcat6.0.19
- apache tomcat6.0.2
- apache tomcat6.0.20
- apache tomcat6.0.21
- apache tomcat6.0.22
- apache tomcat6.0.23
- apache tomcat6.0.24
- apache tomcat6.0.25
- apache tomcat6.0.26
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
- 9.0.0.M1 to 9.0.0.M11, 8.5.0 to 8.5.6, 8.0.0.RC1 to 8.0.38, 7.0.0 to 7.0.72, 6.0.0 to 6.0.47, Earlier, unsupported versions may also be affected.affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:7 | tomcat6 | before 6.0.45+dfsg-1~deb7u3 | 6.0.45+dfsg-1~deb7u3 |
| Debian:7 | tomcat7 | before 7.0.28-4+deb7u7 | 7.0.28-4+deb7u7 |
| Debian:8 | tomcat7 | before 7.0.56-3+deb8u6 | 7.0.56-3+deb8u6 |
| Debian:8 | tomcat8 | before 8.0.14-1+deb8u5 | 8.0.14-1+deb8u5 |
| Maven | org.apache.tomcat:tomcat-coyote | from 6.0.0 · before 6.0.48 | 6.0.48 |
| Maven | org.apache.tomcat:tomcat-coyote | from 7.0.0 · before 7.0.73 | 7.0.73 |
| Maven | org.apache.tomcat:tomcat-coyote | from 8.0.0RC1 · before 8.0.39 | 8.0.39 |
| Maven | org.apache.tomcat:tomcat-coyote | from 8.5.0 · before 8.5.8 | 8.5.8 |
| Maven | org.apache.tomcat:tomcat-coyote | from 9.0.0.M1 · before 9.0.0.M12 | 9.0.0.M12 |
| Red Hat:enterprise_linux:6::client | tomcat6 | before 0:6.0.24-105.el6_8 | 0:6.0.24-105.el6_8 |
| Red Hat:enterprise_linux:6::client | tomcat6-admin-webapps | before 0:6.0.24-105.el6_8 | 0:6.0.24-105.el6_8 |
| Red Hat:enterprise_linux:6::client | tomcat6-docs-webapp | before 0:6.0.24-105.el6_8 | 0:6.0.24-105.el6_8 |
| Red Hat:enterprise_linux:6::client | tomcat6-el-2.1-api | before 0:6.0.24-105.el6_8 | 0:6.0.24-105.el6_8 |
| Red Hat:enterprise_linux:6::client | tomcat6-javadoc | before 0:6.0.24-105.el6_8 | 0:6.0.24-105.el6_8 |
| Red Hat:enterprise_linux:6::client | tomcat6-jsp-2.1-api | before 0:6.0.24-105.el6_8 | 0:6.0.24-105.el6_8 |
| Red Hat:enterprise_linux:6::client | tomcat6-lib | before 0:6.0.24-105.el6_8 | 0:6.0.24-105.el6_8 |
| Red Hat:enterprise_linux:6::client | tomcat6-servlet-2.5-api | before 0:6.0.24-105.el6_8 | 0:6.0.24-105.el6_8 |
| Red Hat:enterprise_linux:6::client | tomcat6-webapps | before 0:6.0.24-105.el6_8 | 0:6.0.24-105.el6_8 |
| Red Hat:enterprise_linux:7::client | tomcat | before 0:7.0.69-11.el7_3 | 0:7.0.69-11.el7_3 |
| Red Hat:enterprise_linux:7::client | tomcat-admin-webapps | before 0:7.0.69-11.el7_3 | 0:7.0.69-11.el7_3 |
| Red Hat:enterprise_linux:7::client | tomcat-docs-webapp | before 0:7.0.69-11.el7_3 | 0:7.0.69-11.el7_3 |
| Red Hat:enterprise_linux:7::client | tomcat-el-2.2-api | before 0:7.0.69-11.el7_3 | 0:7.0.69-11.el7_3 |
| Red Hat:enterprise_linux:7::client | tomcat-javadoc | before 0:7.0.69-11.el7_3 | 0:7.0.69-11.el7_3 |
| Red Hat:enterprise_linux:7::client | tomcat-jsp-2.2-api | before 0:7.0.69-11.el7_3 | 0:7.0.69-11.el7_3 |
+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:tomcat6 | 6.0.45+dfsg-1~deb7u3 · Debian:7 | Package registry (OSV) |
| debian:tomcat7 | 7.0.28-4+deb7u7 · Debian:7 | Package registry (OSV) |
| debian:tomcat8 | 8.0.14-1+deb8u5 · Debian:8 | Package registry (OSV) |
| Maven:org.apache.tomcat:tomcat-coyote | 6.0.48 | Package registry (OSV) |
| Maven:org.apache.tomcat:tomcat-coyote | 7.0.73 | Package registry (OSV) |
| Maven:org.apache.tomcat:tomcat-coyote | 8.0.39 | Package registry (OSV) |
| Maven:org.apache.tomcat:tomcat-coyote | 8.5.8 | Package registry (OSV) |
| Maven:org.apache.tomcat:tomcat-coyote | 9.0.0.M12 | Package registry (OSV) |
| red hat:apache-cxf | 0:2.7.18-5.SP4_redhat_1.1.ep6.el6 · Red Hat:jboss_enterprise_application_platform:6::el6 | Package registry (OSV) |
| red hat:hornetq | 0:2.3.25-18.SP16_redhat_1.1.ep6.el6 · Red Hat:jboss_enterprise_application_platform:6::el6 | Package registry (OSV) |
| red hat:infinispan | 0:5.2.20-1.Final_redhat_1.1.ep6.el6 · Red Hat:jboss_enterprise_application_platform:6::el6 | Package registry (OSV) |
| red hat:infinispan-cachestore-jdbc | 0:5.2.20-1.Final_redhat_1.1.ep6.el6 · Red Hat:jboss_enterprise_application_platform:6::el6 | Package registry (OSV) |
| red hat:infinispan-cachestore-remote | 0:5.2.20-1.Final_redhat_1.1.ep6.el6 · Red Hat:jboss_enterprise_application_platform:6::el6 | Package registry (OSV) |
| red hat:infinispan-client-hotrod | 0:5.2.20-1.Final_redhat_1.1.ep6.el6 · Red Hat:jboss_enterprise_application_platform:6::el6 | Package registry (OSV) |
| red hat:infinispan-core | 0:5.2.20-1.Final_redhat_1.1.ep6.el6 · Red Hat:jboss_enterprise_application_platform:6::el6 | Package registry (OSV) |
| red hat:jboss-as-appclient | 0:7.5.13-2.Final_redhat_2.1.ep6.el6 · Red Hat:jboss_enterprise_application_platform:6::el6 | Package registry (OSV) |
| red hat:jboss-as-cli | 0:7.5.13-2.Final_redhat_2.1.ep6.el6 · Red Hat:jboss_enterprise_application_platform:6::el6 | Package registry (OSV) |
| red hat:jboss-as-client-all | 0:7.5.13-2.Final_redhat_2.1.ep6.el6 · Red Hat:jboss_enterprise_application_platform:6::el6 | Package registry (OSV) |
| red hat:jboss-as-clustering | 0:7.5.13-2.Final_redhat_2.1.ep6.el6 · Red Hat:jboss_enterprise_application_platform:6::el6 | Package registry (OSV) |
| red hat:jboss-as-cmp | 0:7.5.13-2.Final_redhat_2.1.ep6.el6 · Red Hat:jboss_enterprise_application_platform:6::el6 | Package registry (OSV) |
| suse:tomcat | 8.0.32-10.13.2 · SUSE:Linux Enterprise Server 12 SP1 | Package registry (OSV) |
| suse:tomcat6 | 6.0.53-0.56.1 · SUSE:Linux Enterprise Point of Sale 11 SP3 | 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
- Exploit-DB entry ×1
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 |
|---|---|---|
| Exploit-DB entry | remote | 2017-04-04 |
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.
- Published
- First PoC+14 d
- TodaySep 30, 2026+3481 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.
- A user must open a link or visit a page.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- low · data can be read
- Integrity
- low · data or configuration can be modified
- Availability
- low · the service can be disrupted
Impact can extend beyond the vulnerable component (scope changes).
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality impact
- Low
- Integrity impact
- Low
- Availability impact
- Low
Weakness class (CWE)
CWE-20 · Improper Input ValidationCVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
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.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Server Side Include (SSI) InjectionCAPEC-101likelihood: High · High
- Cross Zone ScriptingCAPEC-104likelihood: Medium · High
- Command Line Execution through SQL InjectionCAPEC-108likelihood: Low · Very High
- Object Relational Mapping InjectionCAPEC-109likelihood: Low · High
- SQL Injection through SOAP Parameter TamperingCAPEC-110likelihood: High · Very High
- Double EncodingCAPEC-120likelihood: Low · Medium
- Subverting Environment Variable ValuesCAPEC-13likelihood: High · Very High
ATT&CK techniques
- Obfuscated Files or InformationT1027
- Masquerading: Invalid Code SignatureT1036.001
- Steal Web Session CookieT1539
- Subvert Trust Controls: Code SigningT1553.002
- Impair Defenses:Impair Command History LoggingT1562.003
- Hijack Execution Flow:Dynamic Linker HijackingT1574.006
- Hijack Execution Flow:Path Interception by PATH Environment VariableT1574.007
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✗ → ✓
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References
- access.redhat.com/errata/RHSA-2017:0456
- rhn.redhat.com/errata/RHSA-2017-0244.html
- rhn.redhat.com/errata/RHSA-2017-0245.html
- rhn.redhat.com/errata/RHSA-2017-0246.html
- rhn.redhat.com/errata/RHSA-2017-0247.html
- rhn.redhat.com/errata/RHSA-2017-0250.html
- rhn.redhat.com/errata/RHSA-2017-0457.html
- rhn.redhat.com/errata/RHSA-2017-0527.html
- www.debian.org/security/2016/dsa-3738
- www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- www.securityfocus.com/bid/94461
- www.securitytracker.com/id/1037332
- access.redhat.com/errata/RHSA-2017:0455
- access.redhat.com/errata/RHSA-2017:0935
- lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/37220405a377c0182d2afdbc36461c4783b2930fbeae3a17f1333113%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/388a323769f1dff84c9ec905455aa73fbcb20338e3c7eb131457f708%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/39ae1f0bd5867c15755a6f959b271ade1aea04ccdc3b2e639dcd903b%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/3d19773b4cf0377db62d1e9328bf9160bf1819f04f988315086931d7%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.