CVE-2026-55596
High
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.
SeverityHigh
CVSS8.7
Exploit probability—
Product@platejs/media
PublishedJul 8, 2026
First seenJul 8, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- @platejs/media53.1.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| @platejs/medianpm | 53.0.0 ≤ v < 53.1.4 | 53.1.4 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.