---
id: CVE-2026-116675
title: >-
  TinyMCE Cross-Site Scripting (XSS) vulnerability using media plugin
  `data-mce-object` serialization
summary: >-
  TinyMCE is an open source rich text editor. From 7.9.3 until 7.9.4 and from
  8.5.1 until 8.9.3, the media plugin creates elements crafted through
  data-mce-object in the active document before sanitization. Those elements can
  execute malic…
severity: high
cvss: 8.5
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N'
cvssSource: cna
cwe:
  - CWE-79
vendor: tinymce
product: tinymce
affected:
  - 'tinymce >= 8.5.1, < 8.9.3'
  - 'tinymce >= 7.9.3, < 7.9.4'
published: '2026-10-27'
updated: '2026-10-27'
sourceUpdated: '2026-10-27T16:47:01.183Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-116675'
references:
  - url: 'https://github.com/tinymce/tinymce/security/advisories/GHSA-mf2p-h6hf-fcwm'
    label: 'https://github.com/tinymce/tinymce/security/advisories/GHSA-mf2p-h6hf-fcwm'
  - url: >-
      https://github.com/tinymce/tinymce/commit/bd1ab5ef024c648c3f9c0b409e54a6c227c7d8a2
    label: >-
      https://github.com/tinymce/tinymce/commit/bd1ab5ef024c648c3f9c0b409e54a6c227c7d8a2
  - url: 'https://github.com/tinymce/tinymce/releases/tag/8.9.3'
    label: 'https://github.com/tinymce/tinymce/releases/tag/8.9.3'
  - url: 'https://www.tiny.cloud/docs/tinymce/7/7.9.4-release-notes/#overview'
    label: 'https://www.tiny.cloud/docs/tinymce/7/7.9.4-release-notes/#overview'
  - url: 'https://www.tiny.cloud/docs/tinymce/latest/8.9.3-release-notes/#overview'
    label: 'https://www.tiny.cloud/docs/tinymce/latest/8.9.3-release-notes/#overview'
tags:
  - cve.org
ingestedAt: '2026-10-27T17:33:23.796Z'
---

## Overview

TinyMCE is an open source rich text editor. From 7.9.3 until 7.9.4 and from 8.5.1 until 8.9.3, the media plugin creates elements crafted through data-mce-object in the active document before sanitization. Those elements can execute malicious scripts during processing, resulting in stored cross-site scripting for users with the media plugin enabled. This issue is fixed in versions 8.9.3 and 7.9.4.

## Affected

- `tinymce >= 8.5.1, < 8.9.3`
- `tinymce >= 7.9.3, < 7.9.4`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.