CVE-2026-47759
Published:May 28, 2026
Updated:June 13, 2026
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 Packages
tinymce (CDN_JS):
Affected version(s) >=7.0.0 <7.9.3Fix Suggestion:
Update to version 7.9.3tinymce (CDN_JS):
Affected version(s) >=8.0.0 <8.5.1Fix Suggestion:
Update to version 8.5.1https://github.com/tinymce/tinymce.git (GITHUB):
Affected version(s) >=8.0.0 <8.5.1Fix Suggestion:
Update to version 8.5.1https://github.com/tinymce/tinymce.git (GITHUB):
Affected version(s) >=7.0.0 <7.9.3Fix Suggestion:
Update to version 7.9.3tinymce (NPM):
Affected version(s) >=6.0.0 <7.9.3Fix Suggestion:
Update to version 7.9.3tinymce (NPM):
Affected version(s) >=7.0.0 <7.9.3Fix Suggestion:
Update to version 7.9.3tinymce (NPM):
Affected version(s) >=8.0.0 <8.5.1Fix Suggestion:
Update to version 8.5.1TinyMCE (NUGET):
Affected version(s) >=7.0.0 <7.9.3Fix Suggestion:
Update to version 7.9.3tinymce (NUGET):
Affected version(s) >=8.0.0 <8.5.1Fix Suggestion:
Update to version 8.5.1tinymce (NUGET):
Affected version(s) >=7.0.0 <7.9.3Fix Suggestion:
Update to version 7.9.3TinyMCE (NUGET):
Affected version(s) >=8.0.0 <8.5.1Fix Suggestion:
Update to version 8.5.1tinymce (NUGET):
Affected version(s) >=6.0.0 <7.9.3Fix Suggestion:
Update to version 7.9.3tinymce/tinymce (PHP):
Affected version(s) >=7.0.0 <7.9.3Fix Suggestion:
Update to version 7.9.3tinymce/tinymce (PHP):
Affected version(s) >=6.0.0 <7.9.3Fix Suggestion:
Update to version 7.9.3tinymce/tinymce (PHP):
Affected version(s) >=8.0.0 <8.5.1Fix Suggestion:
Update to version 8.5.1Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
EPSS
Base Score:
0.03