CVE-2026-88976

Medium

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.

SeverityMedium

CVSS6.1

Exploit probability—

Product@platejs/core

PublishedSep 16, 2026

First seenSep 16, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

@platejs/core53.3.11 or later

Affected products

Product	Affected versions	Fixed in
@platejs/corenpm	v < 53.3.11, 54.0.0-beta.0 ≤ v ≤ 54.0.0-beta.1	53.3.11

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