CVE-2026-43889

Outline is vulnerable prior to 1.7.0 due to the shares.create API accepting both collectionId and documentId and, when published=false, skipping the share-permission check. A subsequent shares.update permits publication using an OR policy (can share collection OR can share document), allowing an ...

CVE-2026-43889 Outline: Unauthorized Document Publication via Mixed collectionId+documentId Share

Outline is a service that allows for collaborative documentation. Prior to 1.7.0, the shares.create API accepts both collectionId and documentId simultaneously and, when published=false, only verifies read access for each—skipping the "share" permission check. A subsequent shares.update authorize...