CVE-2026-43890

Outline is a service that allows for collaborative documentation. From 0.84.0 to 1.7.0, the subscriptions.create API endpoint in server/routes/api/subscriptions/subscriptions.ts exhibits a broken authorization pattern. When both collectionId and documentId are supplied in the request, the route...

CVE-2026-43890

The CVE-2026-43890 issue in Outline affects the subscriptions.create API (server/routes/api/subscriptions/subscriptions.ts) from versions 0.84.0–1.7.0. When a request provides both collectionId and documentId, the route authorizes only the collection branch (if (collectionId)), while the downstre...