CVE-2026-47760

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

State: Published
Severity: 8.7 High
Published: May 28, 2026
Updated: Jun 2, 2026
Reserved: May 19, 2026

Description

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.

Scores

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

Weaknesses

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

Affected Products

Product	Versions
tinymcetinymce	>= 6.0.0, < 7.1.0Affected

References

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

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