Vulnerability Description
TinyMCE is an open source rich text editor. Prior to 5.11.1, 7.9.3, and 8.5.1, there is a stored XSS vulnerability via unsanitized data-mce-* attributes (data-mce-href, data-mce-src, data-mce-style). Allows attackers to inject malicious values that override safe attributes during serialization, bypassing validation. This vulnerability is fixed in 5.11.1, 7.9.3, and 8.5.1.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Tiny | Tinymce | < 5.11.1 |
Related Weaknesses (CWE)
References
- https://github.com/tinymce/tinymce/security/advisories/GHSA-q742-qvgc-gc2fPatchVendor Advisory
- https://www.tiny.cloud/docs/tinymce/7/7.9.3-release-notes/#overviewRelease Notes
- https://www.tiny.cloud/docs/tinymce/8/8.5.1-release-notes/#overviewRelease Notes
FAQ
What is CVE-2026-47759?
CVE-2026-47759 is a vulnerability with a CVSS score of 8.7 (HIGH). TinyMCE is an open source rich text editor. Prior to 5.11.1, 7.9.3, and 8.5.1, there is a stored XSS vulnerability via unsanitized data-mce-* attributes (data-mce-href, data-mce-src, data-mce-style). ...
How severe is CVE-2026-47759?
CVE-2026-47759 has been rated HIGH with a CVSS base score of 8.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-47759?
Check the references section above for vendor advisories and patch information. Affected products include: Tiny Tinymce.