TinyMCE XSS via unvalidated data-mce-* attributes (CVE-2026-47759)

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Security AdvisoryCVE-2026-47759HighTinyMCE

Affected:

TinyMCE <5.11.1
TinyMCE >=6.0.0 and <6.8.6
TinyMCE >=7.0.0 and <7.9.3
TinyMCE >=8.0.0 and <8.5.1

Fixed in:

5.11.1
6.8.6
7.9.3
8.5.1

Referenced CVEs: CVE-2026-47759 · 8.7

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