{"id":"CVE-2016-8738","aliases":["EUVD-2022-3130","GHSA-86vq-8qhc-5rqw"],"status":"published","title":"Apache Struts vulnerable to possible DoS attack when using URLValidator","description":"In Apache Struts 2.5 through 2.5.5, if an application allows entering a URL in a form field and the 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.","severity":{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.03259,"percentile":0.8845,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20"],"published":"2017-09-20T17:00:00Z","modified":"2026-10-24T10:30:19Z","fixes":[{"ecosystem":"Maven","package":"org.apache.struts:struts2-core","fixed_in":["2.5.13"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.apache.struts:struts2-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.5.0"},{"fixed":"2.5.13"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.apache.struts:struts2-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.5.0"},{"fixed":"2.5.13"}]}],"versions":["2.5","2.5.1","2.5.10","2.5.10.1","2.5.12","2.5.2","2.5.5","2.5.8"]}],"products":[{"vendor":"apache","product":"struts"},{"vendor":"apache software foundation","product":"apache struts"}],"references":[{"url":"https://security.netapp.com/advisory/ntap-20180629-0003/","tags":["x_refsource_CONFIRM","x_transferred","advisory"]},{"url":"http://www.securityfocus.com/bid/94657","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"https://struts.apache.org/docs/s2-044.html","tags":["x_refsource_CONFIRM","x_transferred","Mitigation","Patch","Vendor Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-8738","tags":["advisory"]},{"url":"https://github.com/apache/struts/commit/554b9dddb0fbd1e581ef577dd62a7c22955ad0f6","tags":["web"]},{"url":"https://github.com/advisories/GHSA-86vq-8qhc-5rqw"},{"url":"https://github.com/apache/struts","tags":["package"]},{"url":"https://security.netapp.com/advisory/ntap-20180629-0003","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2016-8738","description":"In Apache Struts 2.5 through 2.5.5, if an application allows entering a URL in a form field and the 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.","status":"published","published":"2017-09-20T17:00:00Z","modified":"2024-09-16T20:32:00.228Z","updated_at":"2026-11-02T14:33:32.724067Z"}],"euvd":[{"id":"EUVD-2022-3130","description":"In Apache Struts 2.5 through 2.5.5, if an application allows entering a URL in a form field and the 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.","status":"published","published":"2017-09-20T17:00:00Z","modified":"2024-09-16T20:32:00Z","updated_at":"2026-11-03T00:55:13.041098Z"}],"ghsa":[{"id":"GHSA-86vq-8qhc-5rqw","title":"Apache Struts vulnerable to possible DoS attack when using URLValidator","description":"If an application allows enter an 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.","status":"published","published":"2022-05-14T03:15:07Z","modified":"2024-01-04T21:32:57Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:37:29.411214Z"}],"nvd":[{"id":"CVE-2016-8738","description":"In Apache Struts 2.5 through 2.5.5, if an application allows entering a URL in a form field and the 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.","status":"published","published":"2017-09-20T17:29:00.337Z","modified":"2026-06-17T00:54:55.01Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:03:39.176887Z"}],"osv":[{"id":"CVE-2016-8738","description":"In Apache Struts 2.5 through 2.5.5, if an application allows entering a URL in a form field and the 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.","status":"published","published":"2017-09-20T17:29:00.337Z","modified":"2026-10-24T10:30:19.539066577Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:03.171316Z"},{"id":"GHSA-86vq-8qhc-5rqw","title":"Apache Struts vulnerable to possible DoS attack when using URLValidator","description":"If an application allows enter an 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.","status":"published","published":"2022-05-14T03:15:07Z","modified":"2024-02-19T05:37:33.721455Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T15:46:42.077781Z"}]}}