{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "3.18.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "f105f3d41a4405a75f803634d49f15a967524d8a"
            },
            {
              "fixed": "be515aea98961762f6e37a4a55175b900ec03e84"
            }
          ],
          "repo": "https://github.com/novuhq/novu",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-8gr3-5j6f-25gp"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75510.json"
  },
  "details": "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.",
  "id": "CVE-2026-75510",
  "modified": "2026-09-26T03:30:21.164138239Z",
  "published": "2026-09-22T15:47:19.922Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/novuhq/novu/releases/tag/v3.18.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75510.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/novuhq/novu/security/advisories/GHSA-8gr3-5j6f-25gp"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-75510"
    },
    {
      "type": "FIX",
      "url": "https://github.com/novuhq/novu/commit/f105f3d41a4405a75f803634d49f15a967524d8a"
    },
    {
      "type": "FIX",
      "url": "https://github.com/novuhq/novu/pull/11453"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Novu: Stored XSS in In-App Inbox via notification redirect.url javascript: scheme"
}