# ckeditor5 (npm) vulnerabilities

5 known vulnerabilities (1 high, 2 medium, 2 low), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: 49.1.0 (Nov 4, 2026): no advisory affects it
- Newest unaffected release: 49.1.0 (Nov 4, 2026), the latest release
- Weekly downloads: 1.2M
- Dependents: 50
- Releases: 500+ since 47.5.0 (Feb 11, 2026)
- Registry: https://www.npmjs.com/package/ckeditor5
- Releases read: Nov 8, 2026

## Version timeline

Affected versions per advisory, in version order:

- CVE-2026-116688: 47.5.0-alpha.3 to 47.7.3 (47.7.4 is outside it); 48.0.0 to 48.5.0 (48.5.1 is outside it)
- CVE-2026-116687: 47.5.0-alpha.3 to 47.7.3 (47.7.4 is outside it); 48.0.0 to 48.5.0 (48.5.1 is outside it)
- CVE-2026-28343: 47.5.0-alpha.3 to 47.6.0-alpha.9 (47.6.0 is outside it)
- CVE-2025-58064: no published release is affected
- CVE-2024-45613: no published release is affected

Older releases aren't stored, so the earliest spans may start sooner.

## Advisories (5)

### [CVE-2026-116688](https://cve.now/CVE-2026-116688): CKEditor: Cross-site scripting (XSS) in the engine package

- Severity: High 8.1
- Published: Oct 27, 2026
- Affected: from 45.0.0, fixed in 47.7.4; from 48.0.0, fixed in 48.5.1.
- Fixed in 47.7.4 (released Sep 16, 2026, 41 days before disclosure) and 48.5.1 (released Sep 16, 2026, 41 days before disclosure).
- The latest release, 49.1.0, is not affected.
- 26% of ckeditor5 downloads last week were affected versions (409.2K).

### [CVE-2026-116687](https://cve.now/CVE-2026-116687): CKEditor: Cross-site scripting (XSS) in the engine package

- Severity: Low 3.1
- Published: Oct 27, 2026
- Affected: from 29.0.0, fixed in 47.7.4; from 48.0.0, fixed in 48.5.1.
- Fixed in 47.7.4 (released Sep 16, 2026, 41 days before disclosure) and 48.5.1 (released Sep 16, 2026, 41 days before disclosure).
- The latest release, 49.1.0, is not affected.
- 81% of ckeditor5 downloads last week were affected versions (1.3M).

### [CVE-2026-28343](https://cve.now/CVE-2026-28343): CKEditor: Cross-site scripting (XSS) in the HTML Support package

- Severity: Medium 6.4
- Published: Mar 5, 2026
- Affected: from 29.0.0, fixed in 47.6.0.
- Fixed in 47.6.0 (released Mar 4, 2026, 1 day before disclosure).
- The latest release, 49.1.0, is not affected.
- 69% of ckeditor5 downloads last week were affected versions (1.1M).

### [CVE-2025-58064](https://cve.now/CVE-2025-58064): CKEditor is susceptible to Cross-Site Scripting (XSS) through its clipboard package

- Severity: Low 2.3
- Published: Sep 3, 2025
- Affected: from 46.0.0, fixed in 46.0.3; from 44.2.0, fixed in 45.2.2.
- Fixed in 47.5.0 (released Feb 11, 2026, 161 days after disclosure, the advisory names 45.2.2, which was never published).
- The latest release, 49.1.0, is not affected.
- 15% of ckeditor5 downloads last week were affected versions (231K).

### [CVE-2024-45613](https://cve.now/CVE-2024-45613): CKEditor 5 has Cross-site Scripting vulnerability in the clipboard package

- Severity: Medium 5.1
- Published: Sep 25, 2024
- Affected: from 40.0.0, fixed in 43.1.1.
- Fixed in 47.5.0 (released Feb 11, 2026, 504 days after disclosure, the advisory names 43.1.1, which was never published).
- The latest release, 49.1.0, is not affected.
- 24% of ckeditor5 downloads last week were affected versions (373.8K).

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