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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-88976
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-16 15:18:05 UTC
Updated2026-09-16 16:17:20 UTC
DescriptionPlate 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.

Risk And Classification

Primary CVSS: v3.1 6.1 MEDIUM from [email protected]

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

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

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.1MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
3.1CNADECLARED6.1MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Udecode Plate affected < 53.3.11 Not specified
CNA Udecode Plate affected >= 54.0.0-beta.0, <= 54.0.0-beta.1 Not specified

References

ReferenceSourceLinkTags
github.com/udecode/plate/releases/tag/v53.3.11 [email protected] github.com
github.com/udecode/plate/commit/d02afe45d5ec3a9fb95e0745bc5820ff18a3c12b [email protected] github.com
github.com/udecode/plate/security/advisories/GHSA-qrfj-mgw8-j9c6 [email protected] github.com
github.com/udecode/plate/pull/5117 [email protected] github.com
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