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js · tinymceCritical

TinyMCE media plugin stored XSS via data-mce-* attributes

Stored XSS vulnerability in the media plugin allows attackers to inject malicious scripts via crafted data-mce-* attributes.

09 Jun 2026Read 1 minSeverity: act now

What changed

Stored XSS vulnerability in the media plugin allows attackers to inject malicious scripts via crafted data-mce-* attributes.

Who it affects

Users of TinyMCE with the media plugin enabled.

What to do today

Upgrade to TinyMCE 8.5.1, 7.9.3, or 5.11.1 LTS or higher.

The trail
Collected Audited Written Published