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TI-2026-60308 Aliases CVE-2026-88976GHSA-qrfj-mgw8-j9c6

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

Priority LOW 27CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00338 27th percentileScored 2026-11-07
Fix Fixed plate (udecode): 53.3.11@platejs/core (npm): 53.3.11

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
udecodeplatebefore 53.3.11; 54.0.0-beta.0 – 54.0.0-beta.153.3.11Patch availableCNA
—@platejs/core (npm)before 53.3.1153.3.11Patch availableGHSA-qrfj-mgw8-j9c6
—@platejs/core (npm)54.0.0-beta.0 – 54.0.0-beta.1—No fix listedGHSA-qrfj-mgw8-j9c6
  • plate Vendorudecode Affected before 53.3.11; 54.0.0-beta.0 – 54.0.0-beta.1 Fixed in 53.3.11 Patch available CNA
  • @platejs/core (npm) Vendor— Affected before 53.3.11 Fixed in 53.3.11 Patch available GHSA-qrfj-mgw8-j9c6
  • @platejs/core (npm) Vendor— Affected 54.0.0-beta.0 – 54.0.0-beta.1 Fixed in — No fix listed GHSA-qrfj-mgw8-j9c6

Remediation

  • Fix · CNA plate (udecode) Fixed in 53.3.11
  • Fix · GHSA-qrfj-mgw8-j9c6 @platejs/core (npm) Fixed in 53.3.11 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-88976
  2. 2026-10-03 Alias added: GHSA-qrfj-mgw8-j9c6

References

Advisory 1

Other 5

  • TI-2026-40133 Plate: Media embed provider metadata can bypass URL sanitization and execute iframe JavaScript CVSS 3.1HIGH 8.7
  • TI-2026-46915 Plate: SSRF with response disclosure in DOCX image embedding CVSS 3.1HIGH 8.2
  • TI-2023-17081 Cross site scripting (XSS) in @udecode/plate-link CVSS 3.1HIGH 8.1
  • TI-2024-31443 Arbitrary DOM attributes in element.attributes and leaf.attributes in Platejs CVSS 3.1HIGH 8.3
  • TI-2024-27043 Cross-site Scripting (XSS) in media embed element when using custom URL parsers in plate media CVSS 3.1HIGH 8.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences