High 8.7Published Jul 8, 2026

CVE-2026-55596Plate: Media embed provider metadata can bypass URL sanitization and execute iframe JavaScript

Updated under an hour ago (Oct 25, 2026, 10:30 PM ET)

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It affects udecode plate. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for udecode plate

Exploited in the last 30 days

Plate is a rich-text editor with AI and shadcn/ui. From 53.0.0 until 53.1.4, the media embed renderer trusts serialized provider or sourceUrl metadata in useMediaState and skips parseMediaUrl protocol validation, allowing a crafted Plate document to set a known video provider while keeping url as a javascript: iframe source that the registry MediaEmbedElement renders directly as an iframe src when a victim opens the document. This issue is fixed in version 53.1.4.

CVSS: 8.7 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Jul 9, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

udecode plate udecode:plate (from the name)	from 53.0.0, < 53.1.4	CNA record

References

https://github.com/udecode/plate/security/advisories/GHSA-qj6x-xx2h-8hvvx-refsource-confirm
https://github.com/udecode/plate/pull/5014x-refsource-misc
https://github.com/udecode/plate/commit/6214914ca811adf22d0ad503154494216eed68bax-refsource-misc
https://github.com/udecode/plate/releases/tag/v53.1.4x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.