High, CVSS 8.4npmAmendedPublished
Plate media plugins has a XSS in media embed element when using custom URL parsers
CVE-2024-40631 · GHSA-h3pq-667x-r789
- Affected
- npm @udecode/plate-media < 36.0.10
- Fixed in
- 36.0.10· Vendor fix available
- Issue
- 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 vulnerable if the URL is not sanitised. The default parsers parseTwitterUrl and parseVideoUrl are not affected. Examples of vulnerable code: Patches @udecode/plate-media 36.0.10 resolves this issue by only allowing HTTP and HTTPS URLs during parsing. This affects only the embed property returned from useMediaState. In addition, the url property returned from useMediaState has been renamed to unsafeUrl to indicate that it has not been sanitised. The url property on element is also unsafe, but has not been renamed. If you're using either of these properties directly, you will still need to validate the URL yourself. Workarounds Ensure that any custom urlParsers do not allow javascript:, data: or…
Recommended action: Upgrade to 36.0.10 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.