CVE-2026-47760: TinyMCE Cross-Site Scripting (XSS) vulnerability using sanitization bypass through nested SVGs

June 5, 2026

TinyMCE 6.8.x 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.

References

github.com/advisories/GHSA-mh5m-5hw4-5c69
github.com/tinymce/tinymce/security/advisories/GHSA-mh5m-5hw4-5c69
nvd.nist.gov/vuln/detail/CVE-2026-47760

Code Behaviors & Features

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