CVE-2024-40631 Cross-site Scripting (XSS) in media embed element when using custom URL parsers in plate media
Attackers can execute arbitrary scripts via malicious URLs in media embeds if custom parsers or direct URL usage lack proper sanitization.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-40631?
CVE-2024-40631 is a high-severity cross-site scripting vulnerability in udecode plate, published on 15 Jul 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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 the `url` property directly may also be vulnerable if the URL is not sanitised. The default parsers `parseTwitterUrl` and `parseVideoUrl` are not affected. `@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. Users are advised to upgrade. Users unable to upgrade should ensure that any custom `urlParsers` do not allow `javascript:`, `data:` or `vbscript:` URLs to be returned in the `url` property of their return values. If `url` is consumed directly, validate the URL protocol before passing it to the `iframe` element.
Weakness: CWE-79
Which versions are affected by CVE-2024-40631?
2 open source packages ship an affected version, including @udecode/plate-media.
| Package | Affected | Fixed in |
|---|---|---|
@udecode/plate-media npm | All versions | 36.0.10 |
@udecode/plate-media npm | All versions | 36.0.10 |
How do I fix CVE-2024-40631?
Upgrade @udecode/plate-media to 36.0.10 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2024-40631 being exploited?
There is no known exploitation of CVE-2024-40631 in the wild and no public exploit code.
Sources
Also known as GHSA-h3pq-667x-r789.