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.
CVE-2008-6504
NONECVSS 0.0Weaponized
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 39%CVSS: —Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- —
- EG Score
- 0.0(none)
- EPSS
- 98.4%
- KEV
- Not listed
Published
March 23, 2009
Last Modified
April 23, 2026
References (22)
- cve@mitrehttp://fisheye6.atlassian.com/cru/CR-9/
- cve@mitrehttp://issues.apache.org/struts/browse/WW-2692
- cve@mitrehttp://jira.opensymphony.com/browse/XW-641
- cve@mitrehttp://osvdb.org/49732
- cve@mitrehttp://secunia.com/advisories/32495
- cve@mitrehttp://secunia.com/advisories/32497
- cve@mitrehttp://struts.apache.org/2.x/docs/s2-003.html
- cve@mitrehttp://www.securityfocus.com/bid/32101
- cve@mitrehttp://www.vupen.com/english/advisories/2008/3003
- cve@mitrehttp://www.vupen.com/english/advisories/2008/3004
- cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/46328
- af854a3a-2127-422b-91ae-364da2661108http://fisheye6.atlassian.com/cru/CR-9/
- af854a3a-2127-422b-91ae-364da2661108http://issues.apache.org/struts/browse/WW-2692
- af854a3a-2127-422b-91ae-364da2661108http://jira.opensymphony.com/browse/XW-641
- af854a3a-2127-422b-91ae-364da2661108http://osvdb.org/49732
Affected Packages
(1 across 1 ecosystem)
Maven(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| com.opensymphony:xwork | 2.1.0, 2.1.1 | 2.1.2 | — |
Publicly available exploits
(1 reference)Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
- Exploit-DBEDB-32564✓ verifiedFirst seen Nov 4, 2008
XWork < 2.0.11.2 - 'ParameterInterceptor' Class OGNL Security Bypass
Open source ↗
Frequently asked(4)
What is CVE-2008-6504?
CVE-2008-6504 is a none vulnerability published on March 23, 2009. 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…
When was CVE-2008-6504 disclosed?
CVE-2008-6504 was first published in the National Vulnerability Database on March 23, 2009, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2008-6504 actively exploited?
CVE-2008-6504 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2008-6504?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2008-6504, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2008-6504
Is Your Infrastructure Affected by CVE-2008-6504?
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