CVE-2026-55596

HIGH

Plate: Media embed provider metadata can bypass URL sanitization and execute iframe JavaScript

Title source: cna
STIX 2.1

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.

References (4)

Core 4

Scores

CVSS v3 8.7
EPSS 0.0024
EPSS Percentile 15.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-79
Status published
Products (1)
udecode/plate >= 53.0.0, < 53.1.4
Published Jul 08, 2026
Tracked Since Jul 09, 2026