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Inclusion of Functionality from Untrusted Control Sphere in CKEditor 4

Moderate severity GitHub Reviewed Published Oct 13, 2021 to the GitHub Advisory Database • Updated Feb 1, 2023

Package

npm ckeditor4 (npm)

Affected versions

< 4.16.0

Patched versions

4.16.0

Description

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).

References

Published by the National Vulnerability Database Jan 26, 2021
Reviewed Oct 7, 2021
Published to the GitHub Advisory Database Oct 13, 2021
Last updated Feb 1, 2023

Severity

Moderate
6.5
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weaknesses

CVE ID

CVE-2021-26272

GHSA ID

GHSA-wpvm-wqr4-p7cw

Source code

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