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OpenAdvisories
Medium · 6.1 CVE-2026-88976 EUVD-2026-80782GHSA-qrfj-mgw8-j9c6

@platejs/core HTML deserialization can trigger browser behavior during parsing

Published Sep 16, 2026 · Updated Sep 16, 2026 · Assigned by GitHub_M

Description

Plate is a rich-text editor with AI and shadcn/ui. Prior to 53.3.11, and in the discontinued 54.0.0-beta.0 through 54.0.0-beta.1 builds, Plate core HTML deserialization APIs parse supplied HTML strings in the active document. When an application passes untrusted or cross-user HTML to these APIs, certain HTML attributes can trigger browser behavior before the HTML is converted into editor nodes. This can allow attacker-controlled script to execute in the consuming application's origin when another user loads the deserialized content. This issue is fixed in version 53.3.11.

Affected products

VendorProductAffectedFixed
udecode plate < 53.3.11, >= 54.0.0-beta.0, <= 54.0.0-beta.1 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm @platejs/core < 53.3.11 53.3.11 GHSA-qrfj-mgw8-j9c6
npm @platejs/core >= 54.0.0-beta.0, <= 54.0.0-beta.1 — GHSA-qrfj-mgw8-j9c6

References