Description
Outline before 1.8.0 contains an improper access revocation vulnerability that allows deleted administrators to keep receiving document contents because UserDeletedProcessor never disables their WebhookSubscription rows. Former admins who registered webhooks before deletion continue receiving full document bodies, including Markdown and Yjs data, via DeliverWebhookTask for every matching workspace event.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| outline | outline | < 1.8.0 | 1.8.0 |
References
- GitHub Security Advisory (GHSA-33jq-x32c-3ccw) vendor-advisory
- https://github.com/outline/outline/commit/e044014cea958962fc9f5e2b8f6ff1d8cadd676f patch
- outline v1.8.0 Release Notes release-notes
- https://github.com/outline/outline/blob/v1.7.1/server/queues/processors/UserDeletedProcessor.ts technical-description
- VulnCheck Advisory: Outline before 1.8.0 Information Disclosure via Orphaned Webhook Subscriptions third-party-advisory