CVE-2009-0783: Apache Tomcat

Medium severity, CVSS 4.2. EPSS: 0.8% chance of exploitation in the next 30 days.

Apache Tomcat 4.1.0 through 4.1.39, 5.5.0 through 5.5.27, and 6.0.0 through 6.0.18 permits web applications to replace an XML parser used for other web applications, which allows local users to read or modify the (1) web.xml, (2) context.xml, or (3) tld files of arbitrary web applications via a crafted application that is loaded earlier than the target application.

Affected products

• Apache Tomcat: from 4.1.0, up to and including 4.1.39; from 5.5.0, up to and including 5.5.27; from 6.0.0, up to and including 6.0.18

Published 2009-06-05. Last modified 2026-06-16.