@udecode/plate-link does not sanitize URLs to prevent use of the `javascript:` scheme
Impact
Affected versions of the link plugin and link UI component do not sanitize URLs to prevent use of the javascript: scheme. As a result, links with JavaScript URLs can be inserted into the Plate editor through various means, including opening or pasting malicious content.
Patches
@udecode/plate-link 20.0.0 resolves this issue by introducing an allowedSchemes option to the link plugin, defaulting to ['http', 'https', 'mailto', 'tel']. URLs using a scheme that isn't in this list will not be rendered to the DOM.
Workarounds
If you are unable to update @udecode/plate-link to version 20.0.0, we recommend overriding the LinkElement and PlateFloatingLink components with implementations that explicitly check the URL scheme before rendering any anchor elements.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | @udecode/plate-link | < 20.0.0 | 20.0.0 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N- Weakness (CWE)
CWE-79- Platform
- npm
- Package
@udecode/plate-link- Disclosed
- 09.06.2023
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-4882-hxpr-hrvm - CC BY 4.0
Vulnerability history: @udecode/plate-link
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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