---
id: CVE-2026-75510
title: Novu provides an API for sending notifications through multiple channels
summary: >-
  Novu provides an API for sending notifications through multiple channels.
  Prior to 3.18.0, Novu's @novu/js In-App Inbox and the @novu/react Inbox
  component accept a notification call-to-action redirect.url from the v1
  cta.data object and…
severity: medium
cvss: 5.1
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'
cwe:
  - CWE-79
vendor: novuhq
product: novu
affected:
  - novu < 3.18.0
patched:
  - '@novu/js 3.18.0'
published: '2026-09-22'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T21:25:27.050'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-75510'
references:
  - url: >-
      https://github.com/novuhq/novu/commit/f105f3d41a4405a75f803634d49f15a967524d8a
    label: security-advisories@github.com
  - url: 'https://github.com/novuhq/novu/pull/11453'
    label: security-advisories@github.com
  - url: 'https://github.com/novuhq/novu/releases/tag/v3.18.0'
    label: security-advisories@github.com
  - url: 'https://github.com/novuhq/novu/security/advisories/GHSA-8gr3-5j6f-25gp'
    label: security-advisories@github.com
  - url: 'https://github.com/novuhq/novu/security/advisories/GHSA-8gr3-5j6f-25gp'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-75510'
  - url: 'https://github.com/advisories/GHSA-8gr3-5j6f-25gp'
tags:
  - nvd
  - cve.org
  - exploit-available
  - ghsa
  - npm
epss: 0.00353
epssPercentile: 0.26301
aliases:
  - GHSA-8gr3-5j6f-25gp
ecosystem: npm
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-22T15:59:07.979961Z'
cvssSource: cna
ingestedAt: '2026-09-22T16:06:00.470Z'
---

## Overview

Novu provides an API for sending notifications through multiple channels. Prior to 3.18.0, Novu's @novu/js In-App Inbox and the @novu/react Inbox component accept a notification call-to-action redirect.url from the v1 cta.data object and pass it through apps/api/src/app/inbox/utils/notification-mapper.ts and packages/js/src/ui/components/Notification/DefaultNotification.tsx to the navigate function in packages/js/src/ui/context/InboxContext.tsx without validating its URL scheme. An authenticated organization member or environment API-key holder can store a javascript: redirect with target _self in an in-app workflow. When a recipient using a Chromium-based browser clicks the notification, window.open executes the redirect in the current inbox-hosting origin, which can expose session material and permit authenticated actions in a customer application or the self-hosted Novu dashboard. This issue is fixed in version 3.18.0.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-75510)

Affected packages:

- `@novu/js <= 3.17.0`

Patched in:

- `@novu/js 3.18.0`

Source: https://github.com/advisories/GHSA-8gr3-5j6f-25gp