{"id":"GHSA-m94c-37g6-cjhc","summary":"Fake objects feature vulnerability allowing to execute JavaScript code using malformed HTML.","details":"### Affected packages\nThe vulnerability has been discovered in [Fake Objects](https://ckeditor.com/cke4/addon/fakeobjects) plugin. All plugins with [Fake Objects](https://ckeditor.com/cke4/addon/fakeobjects) plugin dependency are affected:\n\n* [Fake Objects](https://ckeditor.com/cke4/addon/fakeobjects)\n* [Link](https://ckeditor.com/cke4/addon/link)\n* [Flash](https://ckeditor.com/cke4/addon/flash)\n* [Iframe](https://ckeditor.com/cke4/addon/iframe)\n* [Forms](https://ckeditor.com/cke4/addon/forms)\n* [Page Break](https://ckeditor.com/cke4/addon/pagebreak)\n\n### Impact\nA potential vulnerability has been discovered in CKEditor 4 [Fake Objects](https://ckeditor.com/cke4/addon/fakeobjects) package. The vulnerability allowed to inject malformed Fake Objects HTML, which could result in executing JavaScript code. It affects all users using the CKEditor 4 plugins listed above at version \u003c 4.16.2.\n\n### Patches\nThe problem has been recognized and patched. The fix will be available in version 4.16.2.\n\n### For more information\nEmail us at security@cksource.com if you have any questions or comments about this advisory.\n\n### Acknowledgements\nThe CKEditor 4 team would like to thank Mika Kulmala ([kulmik](https://github.com/kulmik)) for recognizing and reporting this vulnerability.\n","aliases":["CVE-2021-37695"],"modified":"2026-05-07T05:02:18.790486113Z","published":"2021-08-23T19:42:15Z","database_specific":{"nvd_published_at":"2021-08-13T00:15:00Z","cwe_ids":["CWE-79"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2021-08-23T17:15:12Z"},"references":[{"type":"WEB","url":"https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-m94c-37g6-cjhc"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-37695"},{"type":"WEB","url":"https://github.com/ckeditor/ckeditor4/commit/de3c001540715f9c3801aaa38a1917de46cfcf58"},{"type":"PACKAGE","url":"https://github.com/ckeditor/ckeditor4"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2021/11/msg00007.html"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NYA354LJP47KCVJMTUO77ZCX3ZK42G3T"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UVOYN2WKDPLKCNILIGEZM236ABQASLGW"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WAGNWHFIQAVCP537KFFS2A2GDG66J7XD"},{"type":"WEB","url":"https://www.oracle.com/security-alerts/cpujan2022.html"},{"type":"WEB","url":"https://www.oracle.com/security-alerts/cpuoct2021.html"}],"affected":[{"package":{"name":"ckeditor4","ecosystem":"npm","purl":"pkg:npm/ckeditor4"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"4.16.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/08/GHSA-m94c-37g6-cjhc/GHSA-m94c-37g6-cjhc.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N"}]}