CVE-2026-88976 PUBLISHED

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

Assigner: GitHub_M
Reserved: 10.09.2026 Published: 16.09.2026 Updated: 16.09.2026

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.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS Score: 6.1

Product Status

Vendor udecode
Product plate
Versions
  • Version < 53.3.11 is affected
  • Version >= 54.0.0-beta.0, <= 54.0.0-beta.1 is affected

References

Problem Types

  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') CWE