CKEditor 5 is an open source rich text editor framework with a modular architecture. The CKEditor 5 Markdown plugin (@ckeditor/ckeditor5-markdown-gfm) before version 25.0.0 has a regex denial of service (ReDoS) vulnerability. The vulnerability allowed to abuse link recognition regular expression, which could cause a significant performance drop resulting in browser tab freeze. It affects all users using CKEditor 5 Markdown plugin at version <= 24.0.0. The problem has been recognized and patched. The fix will be available in version 25.0.0.
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History
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published: 2021-01-29T21:55:14
Updated: 2024-08-03T18:09:14.916Z
Reserved: 2020-12-22T00:00:00
Link: CVE-2021-21254
Vulnrichment
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NVD
Status : Modified
Published: 2021-01-29T22:15:14.797
Modified: 2024-11-21T05:47:52.287
Link: CVE-2021-21254
Redhat
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