{"id":"CVE-2017-9804","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-9804","generatedAt":"2026-10-28T21:50:02.801Z","title":"In Apache Struts 2.3.7 through 2.3.33 and 2.5 through 2.5.12, if an application allows entering a URL in a form field and built-in URLValidator is used, it is possible to prepare a special URL which will be used to overload server process when…","description":"In Apache Struts 2.3.7 through 2.3.33 and 2.5 through 2.5.12, if an application allows entering a URL in a form field and built-in URLValidator is used, it is possible to prepare a special URL which will be used to overload server process when performing validation of the URL.  NOTE: this vulnerability exists because of an incomplete fix for S2-047 / CVE-2017-7672.","published":"2017-09-20T17:29:01.000Z","lastModified":"2026-06-17T01:28:57.000Z","status":"Modified","sourceIdentifier":"security@apache.org","cvss":{"version":"3.0","score":7.5,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-20"],"affected":["apache/struts"],"epss":{"score":0.08237,"percentile":0.94866,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (8.24%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-003.txt","tags":["Third Party Advisory"],"source":"security@apache.org"},{"url":"http://www.oracle.com/technetwork/security-advisory/alert-cve-2017-9805-3889403.html","tags":["Patch","Third Party Advisory"],"source":"security@apache.org"},{"url":"http://www.securityfocus.com/bid/100612","tags":["Third Party Advisory","VDB Entry"],"source":"security@apache.org"},{"url":"http://www.securitytracker.com/id/1039261","tags":["Third Party Advisory","VDB Entry"],"source":"security@apache.org"},{"url":"https://security.netapp.com/advisory/ntap-20180629-0001/","source":"security@apache.org"},{"url":"https://struts.apache.org/docs/s2-050.html","tags":["Patch","Vendor Advisory"],"source":"security@apache.org"},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170907-struts2","tags":["Third Party Advisory"],"source":"security@apache.org"},{"url":"http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-003.txt","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.oracle.com/technetwork/security-advisory/alert-cve-2017-9805-3889403.html","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/100612","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1039261","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20180629-0001/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://struts.apache.org/docs/s2-050.html","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170907-struts2","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-9804","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}