# CVE-2026-47759: TinyMCE Cross-Site Scripting (XSS) vulnerability using through data-mce- prefixed src, href, style attributes

> CVE-2026-47759: TinyMCE Cross-Site Scripting (XSS) vulnerability using through data-mce- prefixed src, href, style attributes. CVSS 8.7 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-47759
Last updated: 2026-10-14T20:10:00Z

- Published: 2026-05-28 15:20 UTC · Updated: 2026-10-14 20:10 UTC · Assigner: GitHub\_M
- CVSS: 8.7 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
- EPSS: 0.28%, 20th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-79

## 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.

## Affected vendors and products

- tinymce: tinymce

## Tracked companies

- [Jira](https://rewindex.com/company/jira.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-47759)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-47759)
- [https://github.com/tinymce/tinymce/security/advisories/GHSA-q742-qvgc-gc2f](https://github.com/tinymce/tinymce/security/advisories/GHSA-q742-qvgc-gc2f)
- [https://www.tiny.cloud/docs/tinymce/7/7.9.3-release-notes/\#overview](https://www.tiny.cloud/docs/tinymce/7/7.9.3-release-notes/#overview)
- [https://www.tiny.cloud/docs/tinymce/8/8.5.1-release-notes/\#overview](https://www.tiny.cloud/docs/tinymce/8/8.5.1-release-notes/#overview)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-47759 · Markdown: https://rewindex.com/cve/CVE-2026-47759.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-47759 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:10:43.594Z