CVE-2026-116675: TinyMCE Cross-Site Scripting (XSS) vulnerability using media plugin `data-mce-object` serialization

high Affects tinymce/tinymce. Feed 2026.10.29.4, updated 2026-10-29; published 2026-10-27.

TinyMCE Cross-Site Scripting (XSS) vulnerability using media plugin `data-mce-object` serialization

Package: tinymce/tinymce Composer
Affected versions: >=8.5.1 and <8.9.3 or >=7.9.3 and <7.9.4
Fixed in: 8.9.3, 7.9.4
Severity: high
Exploitation: not on CISA KEV · EPSS 0% (28.4th percentile)
Published: 2026-10-27
Source: osv.dev

References

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