CVE-2003-0866
The Catalina org.apache.catalina.connector.http package in Tomcat 4.0.x up to 4.0.3 allows remote attackers to cause a denial of service…
- 5.0MediumCVSS base score
- 34.8%Exploitation in 30 daysEPSS · top 1.6% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
Description
The Catalina org.apache.catalina.connector.http package in Tomcat 4.0.x up to 4.0.3 allows remote attackers to cause a denial of service via several requests that do not follow the HTTP protocol, which causes Tomcat to reject later requests.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it.
Show the exploits1
Exploit-DB1 entry
- Apache Tomcat 4.0.x - Non-HTTP Request Denial of Service (Exploit-DB entry) (opens in a new tab)
EDB-ID 23245dos, linuxpublished 15 Oct 2003Verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
- 2 days later
· 2 days later
Published
- 21 years later
· 21 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 34.8% · top 1.6% of all CVEs (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenorg.apache.tomcat:tomcatGHSA-7wj2-48c4-2684 (opens in a new tab)
References
12
- http://tomcat.apache.org/security-4.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- 30908 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 8824 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 239312 (opens in a new tab)vendor-advisoryx_refsource_SUNALERTx_transferred
- 30899 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- ADV-2008-1979 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- DSA-395 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=215506 (opens in a new tab)x_refsource_CONFIRMx_transferred
- tomcat-non-http-dos(13429) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- [tomcat-dev] 20190319 svn commit: r1855831 [21/30] - in /tomcat/site/trunk: ./ docs/ xdocs/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [tomcat-dev] 20190325 svn commit: r1856174 [19/29] - in /tomcat/site/trunk: docs/ xdocs/ xdocs/stylesheets/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [tomcat-dev] 20200213 svn commit: r1873980 [24/34] - /tomcat/site/trunk/docs/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2022-1670 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-7wj2-48c4-2684 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2003-0866)Record last updated .