Cross-site Scripting (XSS)

Overview @platejs/media is a Plate Media plugin Affected versions of this package are vulnerable to Cross-site Scripting XSS via the useMediaState file. An attacker can execute arbitrary JavaScript in the context of the victim's browser by crafting a document that sets a trusted video provider...

CVE-2026-55596

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...