{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-75510","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-08-17T20:49:21.598Z","datePublished":"2026-09-22T15:47:19.922Z","dateUpdated":"2026-09-22T15:59:27.761Z"},"containers":{"cna":{"title":"Novu: Stored XSS in In-App Inbox via notification redirect.url javascript: scheme","problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"PASSIVE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","subAvailabilityImpact":"NONE","baseScore":5.1,"baseSeverity":"MEDIUM","vectorString":"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","version":"4.0"}}],"references":[{"name":"https://github.com/novuhq/novu/security/advisories/GHSA-8gr3-5j6f-25gp","tags":["x_refsource_CONFIRM"],"url":"https://github.com/novuhq/novu/security/advisories/GHSA-8gr3-5j6f-25gp"},{"name":"https://github.com/novuhq/novu/pull/11453","tags":["x_refsource_MISC"],"url":"https://github.com/novuhq/novu/pull/11453"},{"name":"https://github.com/novuhq/novu/commit/f105f3d41a4405a75f803634d49f15a967524d8a","tags":["x_refsource_MISC"],"url":"https://github.com/novuhq/novu/commit/f105f3d41a4405a75f803634d49f15a967524d8a"},{"name":"https://github.com/novuhq/novu/releases/tag/v3.18.0","tags":["x_refsource_MISC"],"url":"https://github.com/novuhq/novu/releases/tag/v3.18.0"}],"affected":[{"vendor":"novuhq","product":"novu","versions":[{"version":"< 3.18.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-22T15:47:19.922Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-8gr3-5j6f-25gp","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/novuhq/novu/security/advisories/GHSA-8gr3-5j6f-25gp","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-22T15:59:07.979961Z","id":"CVE-2026-75510","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-22T15:59:27.761Z"}}]}}