{"id":"CVE-2021-21660","details":"Jenkins Markdown Formatter Plugin 0.1.0 and earlier does not sanitize crafted link target URLs, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with the ability to edit any description rendered using the configured markup formatter.","aliases":["GHSA-xqpp-26pp-2365"],"modified":"2026-05-04T08:30:12.568893Z","published":"2021-05-25T17:15:08.150Z","withdrawn":"2026-05-04T08:30:12.568893Z","references":[{"type":"ADVISORY","url":"https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-21660"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2021/05/25/3"},{"type":"ADVISORY","url":"https://www.jenkins.io/security/advisory/2021-05-25/#SECURITY-2198"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-21660.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"0.1.0"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"}]}