CVE-2009-2901: Apache Tomcat

Medium severity, CVSS 4.3. EPSS: 8.1% chance of exploitation in the next 30 days.

The autodeployment process in Apache Tomcat 5.5.0 through 5.5.28 and 6.0.0 through 6.0.20, when autoDeploy is enabled, deploys appBase files that remain from a failed undeploy, which might allow remote attackers to bypass intended authentication requirements via HTTP requests.

Affected products

• Apache Tomcat: version 5.5.0 only; version 5.5.1 only; version 5.5.2 only; version 5.5.3 only; version 5.5.4 only; version 5.5.5 only; …

Published 2010-01-28. Last modified 2026-06-16.