CVE-2026-47760 PUBLISHED

TinyMCE Cross-Site Scripting (XSS) vulnerability using sanitization bypass through nested SVGs

Assigner: GitHub_M
Reserved: 19.05.2026 Published: 28.05.2026 Updated: 28.05.2026

TinyMCE is an open source rich text editor. From 6.8.0 to before 7.1.0, TinyMCE contains an XSS vulnerability caused by improper SVG namespace scope handling in the sanitizer. A crafted payload using nested elements can bypass attribute sanitization and execute arbitrary JavaScript. This vulnerability is fixed in 7.1.0.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
CVSS Score: 8.7

Attack Vector	Network	Scope	Changed
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	High
User Interaction	Required	Availability Impact	None

CVSS 3.1

Product Status

Vendor	tinymce
Product	tinymce
Versions	Version >= 6.0.0, < 7.1.0 is affected

References

https://github.com/tinymce/tinymce/security/advisories/GHSA-mh5m-5hw4-5c69

Problem Types

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') CWE