{"id":"CVE-2018-17256","details":"Persistent cross-site scripting (XSS) vulnerability in Umbraco CMS 7.12.3 allows authenticated users to inject arbitrary web script via the Header Name of a content (Blog, Content Page, etc.). The vulnerability is exploited when updating or removing public access of a content.","aliases":["GHSA-wrrj-r2j4-969w"],"modified":"2026-07-08T19:45:23.274525Z","published":"2018-11-27T19:29:00.197Z","references":[{"type":"ADVISORY","url":"https://www.cspcert.ph/advisories/2018/CVE-2018-17256.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/umbraco/umbraco-cms","events":[{"introduced":"4d4630915b8f25a1c9259a2b29fb5d48f3f8d40c"},{"last_affected":"4d4630915b8f25a1c9259a2b29fb5d48f3f8d40c"}],"database_specific":{"cpe":"cpe:2.3:a:umbraco:umbraco_cms:7.12.3:*:*:*:*:*:*:*","extracted_events":[{"introduced":"7.12.3"},{"last_affected":"7.12.3"}],"source":"CPE_STRING"}}],"versions":["7.12.3","release-7.12.3"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-17256.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N"}]}