XSS in Ckeditor
CVE-2021-41164
CKEditor4 is an open source WYSIWYG HTML editor. In affected versions a vulnerability has been discovered in the Advanced Content Filter (ACF) module and may affect all plugins used by CKEditor 4. The vulnerability allowed to inject malformed HTML bypassing content sanitization, which could result in executing JavaScript code. It affects all users using the CKEditor 4 at version < 4.17.0. The problem has been recognized and patched. The fix will be available in version 4.17.0.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L.
EPSS exploit prediction
EPSS: 0.013 (71.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 71.4% 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
- Ckeditor Ckeditor4 — versions < 4.17.0
- Drupal
- Oracle Agile Plm — versions 9.3.6
- Oracle Agile Product Lifecycle Management — versions 9.3.6
- Oracle Application Express
- Oracle Banking Apis — versions 19.1, 19.2, 20.1
- Oracle Banking Digital Experience — versions 19.1, 19.2, 20.1
- Oracle Commerce Guided Search — versions 11.3.2
- Oracle Peoplesoft Enterprise Peopletools — versions 8.58, 8.59
Weakness classification (CWE)
References
- github.com/ckeditor/ckeditor4/security/advisories/GHSA-pvmx-g8h5-cprj (Third Party Advisory)
- github.com/ckeditor/ckeditor4/blob/major/CHANGES.md (Patch, Third Party Advisory)
- www.oracle.com/security-alerts/cpujan2022.html (Patch, Third Party Advisory)
- www.drupal.org/sa-core-2021-011 (Third Party Advisory)
- www.oracle.com/security-alerts/cpuapr2022.html (Patch, Third Party Advisory)
- www.oracle.com/security-alerts/cpujul2022.html (Not Applicable)
- 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-2021-41164?
- CVE-2021-41164 is a high-severity vulnerability in Ckeditor, classified under Cross-site Scripting. CVSS score: 8.2/10. Published 2021-11-17.
- How severe is CVE-2021-41164?
- High severity. CVSS v3 base score is 8.2 out of 10.