{"id":"UBUNTU-CVE-2021-32808","details":"ckeditor is an open source WYSIWYG HTML editor with rich content support. A vulnerability has been discovered in the clipboard Widget plugin if used alongside the undo feature. The vulnerability allows a user to abuse undo functionality using malformed widget HTML, which could result in executing JavaScript code. It affects all users using the CKEditor 4 plugins listed above at version \u003e= 4.13.0. The problem has been recognized and patched. The fix will be available in version 4.16.2.","modified":"2026-01-30T02:31:56.032832Z","published":"2021-08-12T17:15:00Z","withdrawn":"2025-07-18T16:46:49Z","related":["USN-5340-1"],"upstream":["CVE-2021-32808"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-32808"},{"type":"REPORT","url":"https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-6226-h7ff-ch6c"},{"type":"REPORT","url":"https://github.com/ckeditor/ckeditor4/releases/tag/4.16.2"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5340-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-32808"}],"affected":[{"package":{"name":"ckeditor","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/ckeditor@4.16.2+dfsg-1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.16.2+dfsg-1"}]}],"versions":["4.16.0+dfsg-2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"ckeditor","binary_version":"4.16.2+dfsg-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-32808.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}