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TI-2024-30632 Aliases CVE-2024-45613GHSA-rgg8-g5x8-wr9v

CKEditor 5 has Cross-site Scripting vulnerability in the clipboard package

Priority LOW 24CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Active
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting
Confidentiality · integrity · availability
None · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

CKEditor 5 is a JavaScript rich-text editor. Starting in version 40.0.0 and prior to version 43.1.1, a Cross-Site Scripting (XSS) vulnerability is present in the CKEditor 5 clipboard package. This vulnerability could be triggered by a specific user action, leading to unauthorized JavaScript code execution, if the attacker managed to insert a malicious content into the editor, which might happen with a very specific editor configuration. This vulnerability only affects installations where the Block Toolbar plugin is enabled and either the General HTML Support (with a configuration that permits unsafe markup) or the HTML Embed plugin is also enabled. A fix for the problem is available in version 43.1.1. As a workaround, one may disable the block toolbar plugin.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00524 44th percentileScored 2026-11-07
Fix Fixed ckeditor5 (ckeditor): 43.1.1ckeditor5 (npm): 43.1.1+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ckeditorckeditor540.0.0 to before 43.1.143.1.1Patch availableCNA
—ckeditor5 (npm)40.0.0 to before 43.1.143.1.1Patch availableGHSA-rgg8-g5x8-wr9v
—@ckeditor/ckeditor5-clipboard (npm)40.0.0 to before 43.1.143.1.1Patch availableGHSA-rgg8-g5x8-wr9v
  • ckeditor5 Vendorckeditor Affected 40.0.0 to before 43.1.1 Fixed in 43.1.1 Patch available CNA
  • ckeditor5 (npm) Vendor— Affected 40.0.0 to before 43.1.1 Fixed in 43.1.1 Patch available GHSA-rgg8-g5x8-wr9v
  • @ckeditor/ckeditor5-clipboard (npm) Vendor— Affected 40.0.0 to before 43.1.1 Fixed in 43.1.1 Patch available GHSA-rgg8-g5x8-wr9v

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:ckeditor:ckeditor5:*:*:*:*:*:*:*:*40.0.0 to before 43.1.1Vulnerableckeditor
  • cpe:2.3:a:ckeditor:ckeditor5:*:*:*:*:*:*:*:* Versions 40.0.0 to before 43.1.1 Vulnerable ·ckeditor

Remediation

  • Fix · CNA ckeditor5 (ckeditor) Fixed in 43.1.1
  • Fix · GHSA-rgg8-g5x8-wr9v ckeditor5 (npm) Fixed in 43.1.1 Advisory →
  • Fix · GHSA-rgg8-g5x8-wr9v @ckeditor/ckeditor5-clipboard (npm) Fixed in 43.1.1 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-45613
  2. 2026-10-03 Alias added: GHSA-rgg8-g5x8-wr9v

References

Advisory 2

Other 2

  • TI-2025-37971 A reflected cross-site scripting (XSS) vulnerability in CKeditor v46.1.0 & Angular… CVSS 3.1MEDIUM 5.4
  • TI-2021-04357 Regular expression Denial of Service in Markdown plugin CVSS 3.1MEDIUM 6.5
  • TI-2026-22628 CKEditor: Cross-site scripting (XSS) in the HTML Support package CVSS 3.1MEDIUM 6.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences