Vulnerability library
Security checkSeptember 22, 2026

Novu: Stored XSS in In-App Inbox via notification redirect.url javascript: scheme

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Medium severitynpm@novu/js

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Description

The @novu/js In-App Inbox renderer passes a notification’s redirect.url to window.open() with no URL-scheme validation. The value originates from a notification’s call-to-action and is delivered to the recipient verbatim.

Recommendation

Update the @novu/js package to the latest compatible version. Followings are version details:

  • Affected version(s): <= 3.17.0
  • Patched version(s): 3.18.0

References

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Related Issues

See something that needs correcting? Let us knowUpdated September 22, 2026