CVE-2021-26271: Inclusion of Functionality from Untrusted Control Sphere

January 26, 2021 (updated December 1, 2021)

It was possible to execute a ReDoS-type attack inside CKEditor 4 by persuading a victim to paste crafted text into the Styles input of specific dialogs (in the Advanced Tab for Dialogs plugin).

References

ckeditor.com/blog/CKEditor-4.16-with-improved-image-pasting-High-Contrast-support-and-a-new-color-API/
nvd.nist.gov/vuln/detail/CVE-2021-26271

Detect and mitigate CVE-2021-26271 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →