Jakarta Tomcat 5.0.19 (Coyote/1.1) and Tomcat 4.1.24 (Coyote/1.0) allows remote attackers to poison the web cache, bypass web application fi
Jakarta Tomcat 5.0.19 (Coyote/1.1) and Tomcat 4.1.24 (Coyote/1.0) allows remote attackers to poison the web cache, bypass web application firewall protection, and conduct XSS attacks via an HTTP request with both a "Transfer-Encoding: chunked" header and a Content-Length header, which causes Tomcat to incorrectly handle and forward the body of the request in a way that causes the receiving server to process it as a separate HTTP request, aka "HTTP Request Smuggling."
- Published
- Jul 5, 2005
- Updated
- Jun 16, 2026
- EPSS
- 29.8% · 98th percentile
- CWE
- —
Sign in to follow · You’ll be notified if a followed record enters KEV, gets an exploit or is updated.
Report tools
Action score
26
Monitor
Low priority for now.
- CVSS
- 17 / 40 · 4.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 9 / 30 · 29.8%
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 tomcat4.1.24
- apache tomcat5.0.19
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Maven | org.apache.tomcat:tomcat | from 4.0.0 · up to and including 4.1.24 | — |
| Maven | org.apache.tomcat:tomcat | from 5.0.0 · up to and including 5.0.19 | — |
| Red Hat:certificate_system:7.3 | ant | before 0:1.6.5-1jpp_1rh | 0:1.6.5-1jpp_1rh |
| Red Hat:certificate_system:7.3 | avalon-logkit | before 0:1.2-2jpp_4rh | 0:1.2-2jpp_4rh |
| Red Hat:certificate_system:7.3 | axis | before 0:1.2.1-1jpp_3rh | 0:1.2.1-1jpp_3rh |
| Red Hat:certificate_system:7.3 | classpathx-jaf | before 0:1.0-2jpp_6rh | 0:1.0-2jpp_6rh |
| Red Hat:certificate_system:7.3 | classpathx-mail | before 0:1.1.1-2jpp_8rh | 0:1.1.1-2jpp_8rh |
| Red Hat:certificate_system:7.3 | geronimo-ejb-2.1-api | before 0:1.0-0.M4.1jpp_10rh | 0:1.0-0.M4.1jpp_10rh |
| Red Hat:certificate_system:7.3 | geronimo-j2ee-1.4-apis | before 0:1.0-0.M4.1jpp_10rh | 0:1.0-0.M4.1jpp_10rh |
| Red Hat:certificate_system:7.3 | geronimo-j2ee-connector-1.5-api | before 0:1.0-0.M4.1jpp_10rh | 0:1.0-0.M4.1jpp_10rh |
| Red Hat:certificate_system:7.3 | geronimo-j2ee-deployment-1.1-api | before 0:1.0-0.M4.1jpp_10rh | 0:1.0-0.M4.1jpp_10rh |
| Red Hat:certificate_system:7.3 | geronimo-j2ee-management-1.0-api | before 0:1.0-0.M4.1jpp_10rh | 0:1.0-0.M4.1jpp_10rh |
| Red Hat:certificate_system:7.3 | geronimo-jms-1.1-api | before 0:1.0-0.M4.1jpp_10rh | 0:1.0-0.M4.1jpp_10rh |
| Red Hat:certificate_system:7.3 | geronimo-jsp-2.0-api | before 0:1.0-0.M4.1jpp_10rh | 0:1.0-0.M4.1jpp_10rh |
| Red Hat:certificate_system:7.3 | geronimo-jta-1.0.1B-api | before 0:1.0-0.M4.1jpp_10rh | 0:1.0-0.M4.1jpp_10rh |
| Red Hat:certificate_system:7.3 | geronimo-servlet-2.4-api | before 0:1.0-0.M4.1jpp_10rh | 0:1.0-0.M4.1jpp_10rh |
| Red Hat:certificate_system:7.3 | geronimo-specs | before 0:1.0-0.M4.1jpp_10rh | 0:1.0-0.M4.1jpp_10rh |
| Red Hat:certificate_system:7.3 | geronimo-specs-javadoc | before 0:1.0-0.M4.1jpp_10rh | 0:1.0-0.M4.1jpp_10rh |
| Red Hat:certificate_system:7.3 | log4j | before 0:1.2.12-1jpp_1rh | 0:1.2.12-1jpp_1rh |
| Red Hat:certificate_system:7.3 | mx4j | before 1:3.0.1-1jpp_4rh | 1:3.0.1-1jpp_4rh |
| Red Hat:certificate_system:7.3 | pcsc-lite | before 0:1.3.3-3.el4 | 0:1.3.3-3.el4 |
| Red Hat:certificate_system:7.3 | pcsc-lite-debuginfo | before 0:1.3.3-3.el4 | 0:1.3.3-3.el4 |
| Red Hat:certificate_system:7.3 | pcsc-lite-doc | before 0:1.3.3-3.el4 | 0:1.3.3-3.el4 |
| Red Hat:certificate_system:7.3 | pcsc-lite-libs | before 0:1.3.3-3.el4 | 0:1.3.3-3.el4 |
+80
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 |
|---|---|---|
| red hat:jakarta-commons-modeler | 0:2.0-3jpp_2rh · Red Hat:rhel_application_server:2 | Package registry (OSV) |
| red hat:jakarta-commons-modeler-javadoc | 0:2.0-3jpp_2rh · Red Hat:rhel_application_server:2 | Package registry (OSV) |
| red hat:tomcat5 | 0:5.5.23-0jpp_4rh.3 · Red Hat:rhel_application_server:2 | Package registry (OSV) |
| red hat:tomcat5-admin-webapps | 0:5.5.23-0jpp_4rh.3 · Red Hat:rhel_application_server:2 | Package registry (OSV) |
| red hat:tomcat5-common-lib | 0:5.5.23-0jpp_4rh.3 · Red Hat:rhel_application_server:2 | Package registry (OSV) |
| red hat:tomcat5-jasper | 0:5.5.23-0jpp_4rh.3 · Red Hat:rhel_application_server:2 | Package registry (OSV) |
| red hat:tomcat5-jasper-javadoc | 0:5.5.23-0jpp_4rh.3 · Red Hat:rhel_application_server:2 | Package registry (OSV) |
| red hat:tomcat5-jsp-2.0-api | 0:5.5.23-0jpp_4rh.3 · Red Hat:rhel_application_server:2 | Package registry (OSV) |
| red hat:tomcat5-jsp-2.0-api-javadoc | 0:5.5.23-0jpp_4rh.3 · Red Hat:rhel_application_server:2 | Package registry (OSV) |
| red hat:tomcat5-server-lib | 0:5.5.23-0jpp_4rh.3 · Red Hat:rhel_application_server:2 | Package registry (OSV) |
| red hat:tomcat5-servlet-2.4-api | 0:5.5.23-0jpp_4rh.3 · Red Hat:rhel_application_server:2 | Package registry (OSV) |
| red hat:tomcat5-servlet-2.4-api-javadoc | 0:5.5.23-0jpp_4rh.3 · Red Hat:rhel_application_server:2 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
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.
No dated events beyond publication.
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
If successful
- Confidentiality
- none
- Integrity
- P · data or configuration can be modified
- Availability
- none
- Attack complexity
- M
- Confidentiality impact
- None
- Integrity impact
- P
- Availability impact
- None
Weakness class (CWE)
—
CVSS vector
AV:N/AC:M/Au:N/C:N/I:P/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
- community.ca.com/blogs/casecurityresponseblog/archive/2009/01/23.aspx
- docs.info.apple.com/article.html?artnum=306172
- h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01178795
- lists.apple.com/archives/security-announce//2007/Jul/msg00004.html
- lists.opensuse.org/opensuse-security-announce/2008-03/msg00001.html
- lists.vmware.com/pipermail/security-announce/2008/000003.html
- seclists.org/lists/bugtraq/2005/Jun/0025.html
- secunia.com/advisories/26235
- secunia.com/advisories/26660
- secunia.com/advisories/27037
- secunia.com/advisories/28365
- secunia.com/advisories/29242
- secunia.com/advisories/30899
- secunia.com/advisories/30908
- secunia.com/advisories/33668
- securitytracker.com/id?1014365
- sunsolve.sun.com/search/document.do?assetkey=1-26-239312-1
- support.avaya.com/elmodocs2/security/ASA-2007-206.htm
- support.ca.com/irj/portal/anonymous/phpsupcontent?contentID=197540
- tomcat.apache.org/security-4.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.