CVE-2013-4322: Apache Tomcat

Medium severity, CVSS 4.3. EPSS: 9.5% chance of exploitation in the next 30 days.

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.

Affected products

• Apache Tomcat: version 7.0.0 only; version 7.0.1 only; version 7.0.2 only; version 7.0.3 only; version 7.0.4 only; version 7.0.10 only; …

Published 2014-02-26. Last modified 2026-10-09.