CKEditor 4.x before 4.11.0 allows user-assisted XSS involving a source-mode paste.
Priority LOW 31CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
CKEditor 4.x before 4.11.0 allows user-assisted XSS involving a source-mode paste.
Why it matters now
EPSS 0.01946 80th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed ckeditor (npm): 4.11.0typo3/cms-core (Packagist): 8.7.21, 9.5.2+1 more product
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | ckeditor (npm) | before 4.11.0 | 4.11.0 | Patch available | GHSA-g68x-vvqq-pvw3 |
| — | typo3/cms-core (Packagist) | 8.0.0 to before 8.7.21 | 8.7.21 | Patch available | GHSA-g68x-vvqq-pvw3 |
| — | typo3/cms-core (Packagist) | 9.0.0 to before 9.5.2 | 9.5.2 | Patch available | GHSA-g68x-vvqq-pvw3 |
| — | typo3/cms (Packagist) | 8.0.0 to before 8.7.21 | 8.7.21 | Patch available | GHSA-g68x-vvqq-pvw3 |
| — | typo3/cms (Packagist) | 9.0.0 to before 9.5.2 | 9.5.2 | Patch available | GHSA-g68x-vvqq-pvw3 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- ckeditor (npm) Vendor— Affected before 4.11.0 Fixed in 4.11.0 Patch available GHSA-g68x-vvqq-pvw3
- typo3/cms-core (Packagist) Vendor— Affected 8.0.0 to before 8.7.21 Fixed in 8.7.21 Patch available GHSA-g68x-vvqq-pvw3
- typo3/cms-core (Packagist) Vendor— Affected 9.0.0 to before 9.5.2 Fixed in 9.5.2 Patch available GHSA-g68x-vvqq-pvw3
- typo3/cms (Packagist) Vendor— Affected 8.0.0 to before 8.7.21 Fixed in 8.7.21 Patch available GHSA-g68x-vvqq-pvw3
- typo3/cms (Packagist) Vendor— Affected 9.0.0 to before 9.5.2 Fixed in 9.5.2 Patch available GHSA-g68x-vvqq-pvw3
Remediation
- Fix · GHSA-g68x-vvqq-pvw3 ckeditor (npm) Fixed in 4.11.0 Advisory →
- Fix · GHSA-g68x-vvqq-pvw3 typo3/cms-core (Packagist) Fixed in 8.7.21 Advisory →
- Fix · GHSA-g68x-vvqq-pvw3 typo3/cms-core (Packagist) Fixed in 9.5.2 Advisory →
- Fix · GHSA-g68x-vvqq-pvw3 typo3/cms (Packagist) Fixed in 8.7.21 Advisory →
- Fix · GHSA-g68x-vvqq-pvw3 typo3/cms (Packagist) Fixed in 9.5.2 Advisory →
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2018-17960
- 2026-10-03 Alias added: GHSA-g68x-vvqq-pvw3
References
Exploit 1
Advisory 3
Other 6
- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
- https://ckeditor.com/blog/CKEditor-4.11-with-emoji-dropdown-and-auto-link-on-typing-released
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2018-17960.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2018-17960.yaml
- https://typo3.org/security/advisory/typo3-core-sa-2018-005
- https://web.archive.org/web/20200227030123/http://www.securityfocus.com/bid/109205
More Ckeditor vulnerabilities
- TI-2023-15111 A unrestricted file upload vulnerability was discovered in the ‘Browse and upload images’… CVSS 3.1CRITICAL 9.8
- TI-2021-18004 HTML comments vulnerability allowing to execute JavaScript code CVSS 3.1HIGH 8.2
- TI-2022-08543 Regular expression Denial of Service in dialog plugin CVSS 3.1HIGH 7.5
- TI-2021-18003 Advanced Content Filter (ACF) vulnerability allowing to execute JavaScript code using malformed HTML CVSS 3.1HIGH 8.2
- TI-2021-12473 Cross-site scripting in ckeditor via abuse of undo functionality CVSS 3.1HIGH 7.6
- TI-2011-04280 Information disclosure in CKSource CKEditor Drupal module CVSS 3.1HIGH 7.5
Sources
- CVE-2018-17960 · CVE Program
- CVE-2018-17960 · NVD
- FIRST EPSS
- GHSA-g68x-vvqq-pvw3 · GitHub Advisory Database · CC BY 4.0
- CVE-2018-17960 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences