{"cve":"CVE-2008-6504","nvd":{"published":"2009-03-23T14:19:12.407","modified":"2026-06-16T23:02:20.910","status":"Modified","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.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-20"],"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"],"products":["apache:struts","opensymphony:xwork"],"source":"nvd","synced_at":"2026-10-19T19:53:23.791937413+00:00"},"epss":{"cve":"CVE-2008-6504","score":0.38579,"percentile":0.98577,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-wxw2-2mx5-c5qf","url":"https://osv.dev/vulnerability/GHSA-wxw2-2mx5-c5qf","summary":"Improper Input Validation in OpenSymphony XWork","modified":"2024-11-28T05:33:07.990275Z","packages":[{"ecosystem":"Maven","name":"com.opensymphony:xwork","purl":"pkg:maven/com.opensymphony/xwork","ranges":["<2.0.6"],"fixed":["2.0.6"]},{"ecosystem":"Maven","name":"com.opensymphony:xwork","purl":"pkg:maven/com.opensymphony/xwork","ranges":[">=2.1.0 <2.1.2"],"fixed":["2.1.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}