{"items":[{"id":"NVI-00014066","kind":"vulnerability","title":"Novu: Stored XSS in In-App Inbox via notification redirect.url javascript: scheme","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-8gr3-5j6f-25gp","CVE-2026-75510"],"plain_summary":"GitHub lists this reviewed advisory for @novu/js. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-3c995d2b2289e845ff92d2b4ba49900b"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-3c995d2b2289e845ff92d2b4ba49900b","url":"https://github.com/advisories/GHSA-8gr3-5j6f-25gp","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-8gr3-5j6f-25gp","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T14:29:31.527Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-3c995d2b2289e845ff92d2b4ba49900b"],"technology":"@novu/js","known_exclusions":[],"conditions_summary":"## Summary\n\nThe `@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.\n\nAn authenticated organization member (or any holder of the environment API key) creates a v1 in-app workflow whose step CTA stores `cta.data = { url: \"javascript:\", target: \"_self\" }`. The v1 message-template `cta.data` field is a Mongoose `Mixed` type, so the arbitrary `target` key is accepted and persisted. The server-side inbox mapper copies `cta.data.url` and `cta.data.target` into the notification's `redirect` object with no scheme check. Novu's v2 control schema validates redirect URLs against `redirectUrlRegex` (which rejects `javascript:`), proving the intended invariant; the v1 path and the client renderer do not enforce it.\n\nWhen the recipient clicks the notification, the inbox calls `window.open(url, \"_self\", \"noopener noreferrer\")`. In Chromium browsers a `javascript:` URL opened with `target=\"_self\"` executes in the current document origin (the default `_blank` is browser-blocked, so the attacker sets `_self`).\n\nResult: a l","public_affected_ranges":["<= 3.17.0"]}],"null_published_at":"2026-11-02T10:00:37.202Z","source_updated_at":"2026-09-22T20:34:36.000Z","source_disclosed_at":"2026-09-22T20:34:35.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-01T14:29:31.527Z"}],"next_cursor":null,"snapshot_revision":"42594"}