CVE-2008-6504

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 36.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2009-03-23 · updated 2026-06-16
Weakness: CWE-20

Description

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: 2.0.0, 2.0.2, 2.0.3, 2.0.4, 2.0.5, 2.0.6 (+6)
Opensymphony Xwork: 2.0.0, 2.0.1, 2.0.2, 2.0.3, 2.0.4, 2.0.5 (+2)

References

http://fisheye6.atlassian.com/cru/CR-9/
http://issues.apache.org/struts/browse/WW-2692
http://jira.opensymphony.com/browse/XW-641
http://osvdb.org/49732
http://secunia.com/advisories/32495
http://secunia.com/advisories/32497
http://struts.apache.org/2.x/docs/s2-003.html
http://www.securityfocus.com/bid/32101
http://www.vupen.com/english/advisories/2008/3003
http://www.vupen.com/english/advisories/2008/3004
https://exchange.xforce.ibmcloud.com/vulnerabilities/46328
http://fisheye6.atlassian.com/cru/CR-9/

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