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dotnet · tinymceCritical

TinyMCE 6.8.x-7.0.x XSS via SVG namespace handling

TinyMCE 6.8.x-7.0.x contains an XSS vulnerability due to improper SVG namespace scope handling in the sanitizer, allowing arbitrary JavaScript execution via nes

09 Jun 2026Read 1 minSeverity: act now

What changed

TinyMCE 6.8.x-7.0.x contains an XSS vulnerability due to improper SVG namespace scope handling in the sanitizer, allowing arbitrary JavaScript execution via nested <svg> elements.

Who it affects

Users of TinyMCE versions 6.8.x through 7.0.x.

What to do today

Upgrade to TinyMCE 7.1.0 or later to fix the vulnerability.

The trail
Collected Audited Written Published