Description
ckeditor is an open source WYSIWYG HTML editor with rich content support. A potential vulnerability has been discovered in CKEditor 4 [Fake Objects](https://ckeditor.com/cke4/addon/fakeobjects) package. The vulnerability allowed to inject malformed Fake Objects HTML, which could result in executing JavaScript code. It affects all users using the CKEditor 4 plugins listed above at version < 4.16.2. The problem has been recognized and patched. The fix will be available in version 4.16.2.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| ckeditor | ckeditor4 | < 4.16.2 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 12 | ckeditor | 4.16.2+dfsg-1 | — |
| Debian 9 | ckeditor | 4.5.7+dfsg-2+deb9u1 | DLA-2813-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | request-tracker4 +1 | No fix yet | — |
| Ubuntu 25.10 | request-tracker4 +1 | No fix yet | — |
| Ubuntu 24.04 LTS | ckeditor3 +2 | No fix yet | — |
| Ubuntu 22.04 LTS | ckeditor3 +2 | No fix yet | — |
| Ubuntu 20.04 LTS | ckeditor | 4.12.1+dfsg-1ubuntu0.1 | USN-5340-1 |
| Ubuntu 20.04 LTS | ckeditor3 +2 | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | ckeditor | 4.5.7+dfsg-2ubuntu0.18.04.1 | USN-5340-1 |
| Ubuntu 18.04 LTS | ckeditor3 +1 | No fix yet | — |
| Ubuntu 16.04 LTS | request-tracker4 +1 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | request-tracker4 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | ckeditor | 4.5.7+dfsg-2ubuntu0.16.04.1~esm1 | USN-5340-2 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | ckeditor4 | < 4.16.2 | 4.16.2 | GHSA-m94c-37g6-cjhc |
Advisories 4
- USN-5340-2 ckeditor vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- USN-5340-1 ckeditor vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DLA-2813-1 ckeditor - security update Debian Security (DSA / DLA) · Mar 9, 2026
- WID-SEC-2023-1030 Oracle Siebel CRM: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 18, 2023
References
- https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-m94c-37g6-cjhc
- https://github.com/ckeditor/ckeditor4/commit/de3c001540715f9c3801aaa38a1917de46cfcf58
- FEDORA-2021-51457da891 vendor-advisory
- FEDORA-2021-72176a63a8 vendor-advisory
- FEDORA-2021-87578dca12 vendor-advisory
- https://www.oracle.com/security-alerts/cpuoct2021.html
- [debian-lts-announce] 20211109 [SECURITY] [DLA 2813-1] ckeditor security update mailing-list
- https://www.oracle.com/security-alerts/cpujan2022.html