Fluid Attacks Database

Description

Inclusion of Functionality from Untrusted Control Sphere in CKEditor 4 It was possible to execute a ReDoS-type attack inside CKEditor 4 before 4.16 by persuading a victim to paste crafted URL-like text into the editor, and then press Enter or Space (in the Autolink plugin).

Mitigation

Update Impact

Minimal update. May introduce new vulnerabilities or breaking changes.

Ecosystem	Package	Affected version	Patched versions
debian 12	ckeditor	>=0 <4.16.0+dfsg-1	4.16.0+dfsg-1
npm	ckeditor4	>=0 <4.16.0	4.16.0
debian 11	ckeditor	>=0 <4.16.0+dfsg-1	4.16.0+dfsg-1
npm	ckeditor	>=4.0 <4.16	4.16

Aliases

1. CVE-2021-262722. NVD-2021-262723. OSV-DEBIAN-2021-262724. OSV-2021-262725. GCVE-2021-262726. SECURITY-TRACKER-CVE-2021-26272

References

1. https://ckeditor.com/blog/CKEditor-4.16-with-improved-image-pasting-High-Contrast-support-and-a-new-color-API/#security-comes-first2. https://github.com/ckeditor/ckeditor4/blob/major/CHANGES.md#ckeditor-4163. https://www.oracle.com//security-alerts/cpujul2021.html4. https://www.oracle.com/security-alerts/cpujan2022.html5. https://www.oracle.com/security-alerts/cpuoct2021.html