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

Date Oct 27, 2026

Type Vendor advisory

Signal High-risk advisory

Vendor / Product npm · tinymce

CVE CVE-2026-116675

High-risk advisory CVE-2026-116675

Summary

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

Why it matters

GitHub has published a reviewed security advisory for tinymce. Prioritize it with other application dependency updates, especially because EPSS places it in the 28% percentile.

Operator check

Check whether tinymce is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. CVSS score: 8.5. EPSS probability: 0.3%; percentile: 28%.

Sources

GitHub Advisory GHSA-mf2p-h6hf-fcwm NVD — CVE-2026-116675 Source reference

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.

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