CKEditor 5 provides a WYSIWYG editing solution. This CVE affects the following npm packages: ckeditor5-engine, ckeditor5-font, ckeditor5-image, ckeditor5-list, ckeditor5-markdown-gfm, ckeditor5-media-embed, ckeditor5-paste-from-office, and ckeditor5-widget. Following an internal audit, a regular expression denial of service (ReDoS) vulnerability has been discovered in multiple CKEditor 5 packages. The vulnerability allowed to abuse particular regular expressions, which could cause a significant performance drop resulting in a browser tab freeze. It affects all users using the CKEditor 5 packages listed above at version <= 26.0.0. The problem has been recognized and patched. The fix will be available in version 27.0.0.
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Plain-English explanation, risk summary, and remediation steps will appear here once AI analysis is complete.
No Fix Known
No patch has been released yet. Apply workarounds or mitigations where available.
| Vendor | Product | Versions | Fixed In |
|---|---|---|---|
| ckeditor | ckeditor5-engine | 27.0.0 | - |
| ckeditor | ckeditor5-font | 27.0.0 |
Published
CVE disclosed publicly
Last Modified
Most recent update
Indexed to CVEInsight
Added to this platform
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
8
Affected Products
18
References
ckeditor / ckeditor5-engine
| - |
| ckeditor | ckeditor5-image | 27.0.0 | - |
| ckeditor | ckeditor5-list | 27.0.0 | - |
| ckeditor | ckeditor5-markdown-gfm | 27.0.0 | - |
| ckeditor | ckeditor5-media-embed | 27.0.0 | - |
| ckeditor | ckeditor5-paste-from-office | 27.0.0 | - |
| ckeditor | ckeditor5-widget | 27.0.0 | - |
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Exploitability
Impact