{"id":"CVE-2026-75510","summary":"Novu: Stored XSS in In-App Inbox via notification redirect.url javascript: scheme","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.","aliases":["GHSA-8gr3-5j6f-25gp"],"modified":"2026-09-24T03:45:52.945412927Z","published":"2026-09-22T15:47:19.922Z","database_specific":{"cwe_ids":["CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75510.json","cna_assigner":"GitHub_M"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/novuhq/novu","events":[{"introduced":"0"},{"fixed":"f105f3d41a4405a75f803634d49f15a967524d8a"},{"fixed":"be515aea98961762f6e37a4a55175b900ec03e84"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"3.18.0"}]}}],"versions":["@novu/react@v3.18.0","@novu/react-native@v3.18.0","@novu/nextjs@v3.18.0","@novu/js@v3.18.0","@novu/framework@v2.11.1","novu@2.10.0","v3.17.0","@novu/react@v3.17.0","@novu/react-native@v3.17.0","@novu/nextjs@v3.17.0","@novu/js@v3.17.0","@novu/react@v3.16.0","@novu/react-native@v3.16.0","@novu/nextjs@v3.16.0","@novu/js@v3.16.0","@novu/react@v3.15.0","@novu/react-native@v3.15.0","@novu/nextjs@v3.15.0","@novu/js@v3.15.0","v3.15.0","v3.14.0","@novu/react@v3.14.1","@novu/react-native@v3.14.1","@novu/nextjs@v3.14.1","@novu/js@v3.14.1","@novu/react@v3.14.0","@novu/react-native@v3.14.0","@novu/nextjs@v3.14.0","@novu/js@v3.14.0","v3.13.0","@novu/react@v3.13.0","@novu/react-native@v3.13.0","@novu/nextjs@v3.13.0","@novu/js@v3.13.0","v3.12.0","@novu/react@v3.12.0","@novu/react-native@v3.12.0","@novu/nextjs@v3.12.0","@novu/js@v3.12.0","@novu/react@v3.11.2","@novu/react-native@v3.11.2","@novu/nextjs@v3.11.2","@novu/js@v3.11.2","@novu/react@v3.11.0","@novu/react-native@v3.11.0","@novu/nextjs@v3.11.0","@novu/js@v3.11.0","@novu/framework@2.9.0","@novu/framework@2.8.0","@novu/react@v3.8.1","@novu/react-native@v3.8.1","@novu/nextjs@v3.8.1","@novu/js@v3.8.1","@novu/react@v3.7.0","@novu/react-native@v3.7.0","@novu/nextjs@v3.7.0","@novu/js@v3.7.0","@novu/react@v3.10.1","@novu/react-native@v3.10.1","@novu/nextjs@v3.10.1","@novu/js@v3.10.1","@novu/react@v3.10.0","@novu/react-native@v3.10.0","@novu/nextjs@v3.10.0","@novu/js@v3.10.0","@novu/react@v3.9.3","@novu/react-native@v3.9.3","@novu/nextjs@v3.9.3","@novu/js@v3.9.3","@novu/react@v3.9.2","@novu/react-native@v3.9.2","@novu/nextjs@v3.9.2","@novu/js@v3.9.2","@novu/react@v3.9.1","@novu/react-native@v3.9.1","@novu/nextjs@v3.9.1","@novu/js@v3.9.1","@novu/react@v3.4.0","@novu/react-native@v3.4.0","@novu/nextjs@v3.4.0","@novu/js@v3.4.0","@novu/react@v3.3.1","@novu/react-native@v3.3.1","@novu/nextjs@v3.3.1","@novu/js@v3.3.1","@novu/react@v3.3.0","@novu/react-native@v3.3.0","@novu/nextjs@v3.3.0","@novu/js@v3.3.0","@novu/react@v3.2.0","@novu/react-native@v3.2.0","@novu/nextjs@v3.2.0","@novu/js@v3.2.0","@novu/react@v3.0.3","@novu/react-native@v3.0.3","@novu/nextjs@v3.0.3","@novu/js@v3.0.3","novu@2.6.5","@novu/stateless@2.6.5","@novu/shared@2.6.5","@novu/react@2.6.5","@novu/react-native@2.6.5","@novu/providers@2.6.5","@novu/node@2.6.5","@novu/nextjs@2.6.5","@novu/js@2.6.5","@novu/headless@2.6.5","@novu/framework@2.6.5","@novu/client@2.6.5","@novu/api@2.6.5","v2.0.1","v2.0.0","v0.16.4","v0.14.0","v0.11.0","v0.10.0","v0.8.0","v0.7.3","v0.7.2","v0.7.1","v0.7.0","v0.6.2","v0.6.1","v0.6.0","v0.6.0-alpha.0","v0.5.1","v0.4.2","v0.4.1","v0.4.1-alpha.0","v0.4.0-alpha.12","v0.4.0-alpha.11","v0.4.0-alpha.10","v0.4.0-alpha.9","v0.4.0-alpha.8","v0.4.0-alpha.7","v0.4.0-alpha.6","v0.4.0-alpha.5","v0.4.0-alpha.4","v0.4.0-alpha.3","v0.4.0-alpha.2","v0.3.5","v0.3.5-alpha.0","v0.3.4","v0.2.5","v0.2.6","v0.2.4","v0.2.3","v0.2.2","v0.1.4","v0.1.3","v0.1.1","v0.0.4","v0.0.2","v1.0.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-75510.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","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"}]}