CVE-2026-55596
Plate: Media embed provider metadata can bypass URL sanitization and execute iframe JavaScript
Description
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.
INFO
Published Date :
July 8, 2026, 9:16 p.m.
Last Modified :
Oct. 25, 2026, 5:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update Plate to version 53.1.4.
- Verify media embed rendering logic.
- Sanitize all user-supplied media metadata.
- Implement strict URL protocol validation.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-55596.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-55596 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-55596
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-55596 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-55596 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Translated by [email protected]
Oct. 25, 2026
Action Type Old Value New Value Added Translation Title: plate de udecode, Description: Plate es un editor de texto enriquecido con IA y shadcn/ui. Desde la versión 53.0.0 hasta la 53.1.4, el renderizador de incrustación de medios confía en los metadatos serializados de provider o sourceUrl en useMediaState y omite la validación del protocolo parseMediaUrl, permitiendo que un documento Plate manipulado establezca un proveedor de video conocido mientras mantiene la URL como una fuente de iframe javascript_disabled: que el MediaEmbedElement del registro renderiza directamente como un iframe src cuando una víctima abre el documento. Este problema se ha solucionado en la versión 53.1.4. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 09, 2026
Action Type Old Value New Value Added Reference https://github.com/udecode/plate/security/advisories/GHSA-qj6x-xx2h-8hvv Added SSVC {'id': 'CVE-2026-55596', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-07-09T13:40:39.729677Z'} -
New CVE Received by [email protected]
Jul. 08, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'udecode', 'product': 'plate', 'versions': [{'status': 'affected', 'version': '>= 53.0.0, < 53.1.4'}]}] Added Description 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N Added CWE CWE-79 Added Reference https://github.com/udecode/plate/commit/6214914ca811adf22d0ad503154494216eed68ba Added Reference https://github.com/udecode/plate/pull/5014 Added Reference https://github.com/udecode/plate/releases/tag/v53.1.4 Added Reference https://github.com/udecode/plate/security/advisories/GHSA-qj6x-xx2h-8hvv