CVE-2021-26272
MEDIUMCKEditor 4.0-4.15 - Regular Expression Denial of Service via Autolink Plugin
Title source: llmDescription
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 (5)
Core 5
Core References
Release Notes, Third Party Advisory x_refsource_misc
https://github.com/ckeditor/ckeditor4/blob/major/CHANGES.md#ckeditor-416
Patch, Third Party Advisory x_refsource_misc
https://www.oracle.com//security-alerts/cpujul2021.html
Vendor Advisory x_refsource_misc
https://ckeditor.com/blog/CKEditor-4.16-with-improved-image-pasting-High-Contrast-support-and-a-new-color-API/#security-comes-first
Patch, Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpuoct2021.html
Not Applicable, Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpujan2022.html
Scores
CVSS v3
6.5
EPSS
0.0222
EPSS Percentile
80.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Details
CWE
CWE-829
Status
published
Products (17)
ckeditor/ckeditor
4.0 - 4.16
npm/ckeditor4
0 - 4.16.0npm
oracle/agile_plm
9.3.5
oracle/agile_plm
9.3.6
oracle/application_express
< 21.1.0
oracle/banking_party_management
2.7.0
oracle/commerce_merchandising
11.1.0
oracle/commerce_merchandising
11.2.0
oracle/commerce_merchandising
11.3.0 - 11.3.2
oracle/financial_services_analytical_applications_infrastructure
8.1.0
... and 7 more
Published
Jan 26, 2021
Tracked Since
Feb 18, 2026