CVE-2008-6504: Apache Struts

Medium severity, CVSS 5.0. EPSS: 36.6% chance of exploitation in the next 30 days.

ParametersInterceptor in OpenSymphony XWork 2.0.x before 2.0.6 and 2.1.x before 2.1.2, as used in Apache Struts and other products, does not properly restrict # (pound sign) references to context objects, which allows remote attackers to execute Object-Graph Navigation Language (OGNL) statements and modify server-side context objects, as demonstrated by use of a \u0023 representation for the # character.

Affected products

• Apache Struts: version 2.0.0 only; version 2.0.2 only; version 2.0.3 only; version 2.0.4 only; version 2.0.5 only; version 2.0.6 only; …
• Opensymphony Xwork: version 2.0.0 only; version 2.0.1 only; version 2.0.2 only; version 2.0.3 only; version 2.0.4 only; version 2.0.5 only; …

Published 2009-03-23. Last modified 2026-06-16.