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SCA: security update for @ckeditor/ckeditor5-markdown-gfm (GHSA-hgmg-hhc8-g5wr)

medium Tenable Cloud Security Plugin ID 415726

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2021-21254)

See Also

https://github.com/advisories/GHSA-hgmg-hhc8-g5wr

Plugin Details

Severity: Medium

ID: 415726

Version: Revision 1.5

Type: Local

Family: SCA Checks

Published: 1/23/2025

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:P

CVSS Score Source: CVE-2021-21254

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 1/29/2021

Vulnerability Publication Date: 1/29/2021

Reference Information

CVE: CVE-2021-21254

cwe: CWE-400