{"cve":"CVE-2013-4322","nvd":{"published":"2014-02-26T14:55:08.193","modified":"2026-10-09T20:17:07.663","status":"Modified","description":"Apache Tomcat before 6.0.39, 7.x before 7.0.50, and 8.x before 8.0.0-RC10 processes chunked transfer coding without properly handling (1) a large total amount of chunked data or (2) whitespace characters in an HTTP header value within a trailer field, which allows remote attackers to cause a denial of service by streaming data.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-3544.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-20"],"references":["http://advisories.mageia.org/MGASA-2014-0148.html","http://marc.info/?l=bugtraq&m=144498216801440&w=2","http://seclists.org/fulldisclosure/2014/Dec/23","http://secunia.com/advisories/59036","http://secunia.com/advisories/59675"],"products":["apache:tomcat"],"source":"nvd","synced_at":"2026-10-19T20:32:06.812358378+00:00"},"epss":{"cve":"CVE-2013-4322","score":0.09095,"percentile":0.95266,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-wq2p-q66w-q8gp","url":"https://osv.dev/vulnerability/GHSA-wq2p-q66w-q8gp","summary":"Apache Tomcat Denial of Service vulnerability","modified":"2024-11-28T05:40:25.504365Z","packages":[{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","ranges":["<6.0.39"],"fixed":["6.0.39"]},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","ranges":[">=7.0.0 <7.0.50"],"fixed":["7.0.50"]},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","ranges":[">=8.0.0-RC1 <8.0.0-RC10"],"fixed":["8.0.0-RC10"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}