CVE-2021-21391

Katalog CVE

CVSS 6.5 · Medium EPSS 1,7%

Kerentanan Uncontrolled Resource Consumption pada ckeditor5-engine, ckeditor5-font +6 lainnya. Skor CVSS 3.1 6.5 (Medium) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

29 April 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

6.5 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-400: Uncontrolled Resource Consumption

EPSS (30 hari)

1,7% peluang dieksploitasi; lebih tinggi dari 76,1% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-3rh3-wfr4-76mj advisory pihak ketiga
• https://www.npmjs.com/package/%40ckeditor/ckeditor5-engine
• https://www.npmjs.com/package/%40ckeditor/ckeditor5-font
• https://www.npmjs.com/package/%40ckeditor/ckeditor5-image
• https://www.npmjs.com/package/%40ckeditor/ckeditor5-list
• https://www.npmjs.com/package/%40ckeditor/ckeditor5-markdown-gfm
• https://www.npmjs.com/package/%40ckeditor/ckeditor5-media-embed
• https://www.npmjs.com/package/%40ckeditor/ckeditor5-paste-from-office
• https://www.npmjs.com/package/%40ckeditor/ckeditor5-widget