GHSA-QJ6X-XX2H-8HVV Plate: Media embed provider metadata can bypass URL sanitization and execute iframe JavaScript

Summary The media embed renderer trusts serialized provider or sourceUrl metadata and skips the URL protocol validation that normally blocks unsafe media embed URLs. A crafted Plate document can set a known video provider while keeping url as a javascript: iframe source. When a victim opens that...

Plate media plugins has a XSS in media embed element when using custom URL parsers

Impact Editors that use MediaEmbedElement and pass custom urlParsers to the useMediaState hook may be vulnerable to XSS if a custom parser allows javascript:, data: or vbscript: URLs to be embedded. Editors that do not use urlParsers and instead consume the url property directly may also be...

CVE-2024-40631 Cross-site Scripting (XSS) in media embed element when using custom URL parsers in plate media

Plate media is an open source, rich-text editor for React. Editors that use MediaEmbedElement and pass custom urlParsers to the useMediaState hook may be vulnerable to XSS if a custom parser allows javascript:, data: or vbscript: URLs to be embedded. Editors that do not use urlParsers and consume...