CVE-2011-0534: Apache Tomcat

Medium severity, CVSS 5.0. EPSS: 7.9% chance of exploitation in the next 30 days.

Apache Tomcat 7.0.0 through 7.0.6 and 6.0.0 through 6.0.30 does not enforce the maxHttpHeaderSize limit for requests involving the NIO HTTP connector, which allows remote attackers to cause a denial of service (OutOfMemoryError) via a crafted request.

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 7.0.5 only; …

Published 2011-02-10. Last modified 2026-06-16.