{"id":"CVE-2002-0935","aliases":["EUVD-2022-1871","GHSA-xmf4-j3j7-xj7q"],"status":"published","title":"Apache Tomcat DoS Via Requests Including Null Characters","description":"Apache Tomcat 4.0.3, and possibly other versions before 4.1.3 beta, allows remote attackers to cause a denial of service (resource exhaustion) via a large number of requests to the server with null characters, which causes the working threads to hang.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.07854,"percentile":0.94727,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400"],"published":"2002-10-04T04:00:00Z","modified":"2026-06-16T21:58:25Z","fixes":[{"ecosystem":"Maven","package":"org.apache.tomcat:tomcat","fixed_in":["4.1.3-beta"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.apache.tomcat:tomcat","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.3-beta"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.apache.tomcat:tomcat","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.3-beta"}]}]}],"products":[{"vendor":"apache","product":"tomcat"}],"references":[{"url":"http://online.securityfocus.com/archive/1/277940","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://archives.neohapsis.com/archives/vulnwatch/2002-q2/0120.html","tags":["mailing-list","x_refsource_VULNWATCH","x_transferred"]},{"url":"http://www.osvdb.org/5051","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://www.securityfocus.com/bid/5067","tags":["vdb-entry","x_refsource_BID","x_transferred","Patch","Vendor Advisory"]},{"url":"http://www.iss.net/security_center/static/9396.php","tags":["vdb-entry","x_refsource_XF","x_transferred","Patch","Vendor Advisory"]},{"url":"https://lists.apache.org/thread.html/29dc6c2b625789e70a9c4756b5a327e6547273ff8bde7e0327af48c5%40%3Cdev.tomcat.apache.org%3E","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"https://lists.apache.org/thread.html/c62b0e3a7bf23342352a5810c640a94b6db69957c5c19db507004d74%40%3Cdev.tomcat.apache.org%3E","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"https://lists.apache.org/thread.html/rb71997f506c6cc8b530dd845c084995a9878098846c7b4eacfae8db3%40%3Cdev.tomcat.apache.org%3E","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2002-0935","tags":["advisory"]},{"url":"https://lists.apache.org/thread.html/29dc6c2b625789e70a9c4756b5a327e6547273ff8bde7e0327af48c5@%3Cdev.tomcat.apache.org%3E","tags":["web"]},{"url":"https://lists.apache.org/thread.html/c62b0e3a7bf23342352a5810c640a94b6db69957c5c19db507004d74@%3Cdev.tomcat.apache.org%3E","tags":["web"]},{"url":"https://lists.apache.org/thread.html/rb71997f506c6cc8b530dd845c084995a9878098846c7b4eacfae8db3@%3Cdev.tomcat.apache.org%3E","tags":["web"]},{"url":"https://web.archive.org/web/20020822030311/http://www.iss.net/security_center/static/9396.php","tags":["web"]},{"url":"https://web.archive.org/web/20021010182017/http://online.securityfocus.com/bid/5067","tags":["web"]},{"url":"https://web.archive.org/web/20021116054924/http://online.securityfocus.com/archive/1/277940","tags":["web"]},{"url":"https://web.archive.org/web/20070525180638/http://archives.neohapsis.com/archives/vulnwatch/2002-q2/0120.html","tags":["web"]},{"url":"https://github.com/advisories/GHSA-xmf4-j3j7-xj7q"}],"sources":{"cve":[{"id":"CVE-2002-0935","description":"Apache Tomcat 4.0.3, and possibly other versions before 4.1.3 beta, allows remote attackers to cause a denial of service (resource exhaustion) via a large number of requests to the server with null characters, which causes the working threads to hang.","status":"published","published":"2003-04-02T05:00:00Z","modified":"2024-08-08T03:03:49.295Z","updated_at":"2026-11-02T14:33:55.642267Z"}],"euvd":[{"id":"EUVD-2022-1871","description":"Apache Tomcat 4.0.3, and possibly other versions before 4.1.3 beta, allows remote attackers to cause a denial of service (resource exhaustion) via a large number of requests to the server with null characters, which causes the working threads to hang.","status":"published","published":"2003-04-02T05:00:00Z","modified":"2024-08-08T03:03:49Z","updated_at":"2026-11-03T01:14:58.174731Z"}],"ghsa":[{"id":"GHSA-xmf4-j3j7-xj7q","title":"Apache Tomcat DoS Via Requests Including Null Characters","description":"Apache Tomcat 4.0.3, and possibly other versions before 4.1.3 beta, allows remote attackers to cause a denial of service (resource exhaustion) via a large number of requests to the server with null characters, which causes the working threads to hang.","status":"published","published":"2022-04-30T18:20:13Z","modified":"2024-02-12T18:22:52Z","cwes":["CWE-400"],"updated_at":"2026-11-02T14:37:38.20753Z"}],"nvd":[{"id":"CVE-2002-0935","description":"Apache Tomcat 4.0.3, and possibly other versions before 4.1.3 beta, allows remote attackers to cause a denial of service (resource exhaustion) via a large number of requests to the server with null characters, which causes the working threads to hang.","status":"published","published":"2002-10-04T04:00:00Z","modified":"2026-06-16T21:58:25.067Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:00:42.827505Z"}],"osv":[{"id":"GHSA-xmf4-j3j7-xj7q","title":"Apache Tomcat DoS Via Requests Including Null Characters","description":"Apache Tomcat 4.0.3, and possibly other versions before 4.1.3 beta, allows remote attackers to cause a denial of service (resource exhaustion) via a large number of requests to the server with null characters, which causes the working threads to hang.","status":"published","published":"2022-04-30T18:20:13Z","modified":"2024-02-12T18:42:07.129471Z","cwes":["CWE-400"],"updated_at":"2026-11-02T15:47:00.198893Z"}]}}