XSS in Ckeditor
CVE-2020-9440
A cross-site scripting (XSS) vulnerability in the WSC plugin through 5.5.7.5 for CKEditor 4 allows remote attackers to run arbitrary web script inside an IFRAME element by injecting a crafted HTML element into the editor.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.013 (69.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 69.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
- Ckeditor — versions 4.0
- Webspellchecker
- Fedoraproject Fedora — versions 30, 31, 32
Weakness classification (CWE)
References
- ckeditor.com/blog/CKEditor-4.14-with-Paste-from-LibreOffice-released/ (Vendor Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
Frequently asked questions
- What is CVE-2020-9440?
- CVE-2020-9440 is a medium-severity vulnerability in Ckeditor, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-03-10.
- How severe is CVE-2020-9440?
- Medium severity. CVSS v3 base score is 6.1 out of 10.