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CVE-2026-47759
TinyMCE Cross-Site Scripting (XSS) vulnerability using through data-mce- prefixed src, href, style attributes
High8.7EPSS 0.28%
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | High8.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N |
| NVDNVD · Analyzed | 3.1 | Medium5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.28% · top 79% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.7.
Weakness
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- NuGetTinyMCEGHSA-q742-qvgc-gc2f (opens in a new tab)
- Packagisttinymce/tinymceGHSA-q742-qvgc-gc2f (opens in a new tab)
- npmtinymceGHSA-q742-qvgc-gc2f (opens in a new tab)
References (3)
- https://github.com/tinymce/tinymce/security/advisories/GHSA-q742-qvgc-gc2f (opens in a new tab)x_refsource_CONFIRM
- https://www.tiny.cloud/docs/tinymce/7/7.9.3-release-notes/#overview (opens in a new tab)x_refsource_MISC
- https://www.tiny.cloud/docs/tinymce/8/8.5.1-release-notes/#overview (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-q742-qvgc-gc2f (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-47759)Record last updated .