---
id: CVE-2026-47759
title: TinyMCE is an open source rich text editor
summary: >-
  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 …
severity: high
cvss: 8.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N'
cwe:
  - CWE-79
vendor: tiny
product: tinymce
affected:
  - tinymce < 5.11.1
  - 'tinymce >= 6.0.0, < 7.9.3'
  - 'tinymce >= 8.0.0, < 8.5.1'
patched:
  - tinymce 8.5.1
published: '2026-05-28'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T20:10:00.190'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-47759'
references:
  - url: 'https://github.com/tinymce/tinymce/security/advisories/GHSA-q742-qvgc-gc2f'
    label: security-advisories@github.com
  - url: 'https://www.tiny.cloud/docs/tinymce/7/7.9.3-release-notes/#overview'
    label: security-advisories@github.com
  - url: 'https://www.tiny.cloud/docs/tinymce/8/8.5.1-release-notes/#overview'
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00416
epssPercentile: 0.3434
ingestedAt: '2026-10-14T20:53:12.337Z'
---

## Overview

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

- `tinymce < 5.11.1`
- `tinymce >= 6.0.0, < 7.9.3`
- `tinymce >= 8.0.0, < 8.5.1`

## Remediation

Upgrade past the affected range:

- `tinymce 8.5.1`