Vulnerability Description
It was possible to execute a ReDoS-type attack inside CKEditor 4 before 4.16 by persuading a victim to paste crafted text into the Styles input of specific dialogs (in the Advanced Tab for Dialogs plugin).
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ckeditor | Ckeditor | >= 4.0, < 4.16 |
| Oracle | Agile Plm | 9.3.5 |
| Oracle | Application Express | < 21.1.0 |
| Oracle | Financial Services Analytical Applications Infrastructure | >= 8.0.6, <= 8.0.9 |
| Oracle | Jd Edwards Enterpriseone Tools | < 9.2.6.0 |
| Oracle | Siebel Ui Framework | < 21.9 |
| Oracle | Webcenter Sites | 12.2.1.3.0 |
Related Weaknesses (CWE)
References
- https://ckeditor.com/blog/CKEditor-4.16-with-improved-image-pasting-High-ContrasVendor Advisory
- https://github.com/ckeditor/ckeditor4/blob/major/CHANGES.md#ckeditor-416Release NotesThird Party Advisory
- https://www.oracle.com//security-alerts/cpujul2021.htmlPatchThird Party Advisory
- https://www.oracle.com/security-alerts/cpuoct2021.htmlPatchThird Party Advisory
- https://ckeditor.com/blog/CKEditor-4.16-with-improved-image-pasting-High-ContrasVendor Advisory
- https://github.com/ckeditor/ckeditor4/blob/major/CHANGES.md#ckeditor-416Release NotesThird Party Advisory
- https://www.oracle.com//security-alerts/cpujul2021.htmlPatchThird Party Advisory
- https://www.oracle.com/security-alerts/cpuoct2021.htmlPatchThird Party Advisory
FAQ
What is CVE-2021-26271?
CVE-2021-26271 is a vulnerability with a CVSS score of 6.5 (MEDIUM). It was possible to execute a ReDoS-type attack inside CKEditor 4 before 4.16 by persuading a victim to paste crafted text into the Styles input of specific dialogs (in the Advanced Tab for Dialogs plu...
How severe is CVE-2021-26271?
CVE-2021-26271 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-26271?
Check the references section above for vendor advisories and patch information. Affected products include: Ckeditor Ckeditor, Oracle Agile Plm, Oracle Application Express, Oracle Financial Services Analytical Applications Infrastructure, Oracle Jd Edwards Enterpriseone Tools.