Vulnerability in Ckeditor
CVE-2021-26271
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).
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.020 (80.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 80.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: +0.000
Affected products
- Ckeditor
- Oracle Agile Plm — versions 9.3.5, 9.3.6
- Oracle Agile Product Lifecycle Management — versions 9.3.5, 9.3.6
- Oracle Application Express
- Oracle Financial Services Analytical Applications Infrastructure — versions 8.1.0, 8.1.1
- Oracle Jd Edwards Enterpriseone Tools
- Oracle Siebel Ui Framework
- Oracle Webcenter Sites — versions 12.2.1.3.0, 12.2.1.4.0
Weakness classification (CWE)
References
- github.com/ckeditor/ckeditor4/blob/major/CHANGES.md (Third Party Advisory, Release Notes)
- www.oracle.com//security-alerts/cpujul2021.html (Patch, Third Party Advisory)
- ckeditor.com/blog/CKEditor-4.16-with-improved-image-pasting-High-Contrast-suppo… (Vendor Advisory)
- www.oracle.com/security-alerts/cpuoct2021.html (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-26271?
- CVE-2021-26271 is a medium-severity vulnerability in Ckeditor, classified under Inclusion of Functionality from Untrusted Control Sphere. CVSS score: 6.5/10. Published 2021-01-26.
- How severe is CVE-2021-26271?
- Medium severity. CVSS v3 base score is 6.5 out of 10.