CVE-2003-0866

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 34.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2003-11-17 · updated 2026-06-16

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.

Affected products

Apache Tomcat: 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.5 (+1)

References

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=215506
http://secunia.com/advisories/30899
http://secunia.com/advisories/30908
http://sunsolve.sun.com/search/document.do?assetkey=1-26-239312-1
http://tomcat.apache.org/security-4.html
http://www.debian.org/security/2003/dsa-395
http://www.securityfocus.com/bid/8824
http://www.vupen.com/english/advisories/2008/1979/references
https://exchange.xforce.ibmcloud.com/vulnerabilities/13429
https://lists.apache.org/thread.html/29dc6c2b625789e70a9c4756b5a327e6547273ff8bde7e0327af48c5%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/c62b0e3a7bf23342352a5810c640a94b6db69957c5c19db507004d74%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/rb71997f506c6cc8b530dd845c084995a9878098846c7b4eacfae8db3%40%3Cdev.tomcat.apache.org%3E

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