According to http://tomcat.apache.org/security-5.html
Fixed in Apache Tomcat 5.5.16
Cross-site scripting CVE-2006-7196
The calendar application included as part of the JSP examples is susceptible to
a cross-site scripting attack as it does not escape user provided data before
including it in the returned page.
Affects: 5.0.0-5.0.30, 5.5.0-5.5.15
Advisory text: "The calendar application in the JSP examples did not escape
displayed values. If the JSP examples are accessible, this flaw could allow a
remote attacker to perform cross-site scripting attacks. (CVE-2006-7196)"
This was addressed via:
Red Hat Application Server v2 4AS (RHSA-2007:0326)
Red Hat Application Server 3AS (RHSA-2007:0340)
Red Hat Network Satellite Server 5.0 (RHEL v.4 AS) (RHSA-2008:0261)
Red Hat Network Satellite Server v 4.2 (RHEL v.3 AS) (RHSA-2008:0524)
Red Hat Network Satellite Server v 4.2 (RHEL v.4 AS) (RHSA-2008:0524)