CVE-2026-113611
Outline before 1.8.0 Information Disclosure via Orphaned Webhook Subscriptions
- State
- Published
- Severity
- 6.9 Medium
- Published
- Oct 20, 2026
- Updated
- Oct 23, 2026
- Reserved
- Oct 20, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 4.9 Medium | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-863 Incorrect Authorization
Affected Products
| Product | Versions |
|---|---|
outlineoutline |
|
References
- GitHub Security Advisory (GHSA-33jq-x32c-3ccw)vendor-advisory
- https://github.com/outline/outline/commit/e044014cea958962fc9f5e2b8f6ff1d8cadd676fpatch
- outline v1.8.0 Release Notesrelease-notes
- https://github.com/outline/outline/blob/v1.7.1/server/queues/processors/UserDeletedProcessor.tstechnical-description
- VulnCheck Advisory: Outline before 1.8.0 Information Disclosure via Orphaned Webhook Subscriptionsthird-party-advisory
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