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.

Attack Vector Network

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
outline outline unaffected
Version Status Constraints
0 affected < 1.8.0

No data.

No data.

No data.

Project Subscriptions

Vendors Products
Getoutline Subscribe
Outline Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/outline/outline/blob/v1.7.1/server/queues/processors/UserDeletedProcessor.ts cve-icon cve-icon
https://github.com/outline/outline/commit/e044014cea958962fc9f5e2b8f6ff1d8cadd676f cve-icon cve-icon
https://github.com/outline/outline/releases/tag/v1.8.0 cve-icon cve-icon
https://github.com/outline/outline/security/advisories/GHSA-33jq-x32c-3ccw cve-icon cve-icon
https://www.vulncheck.com/advisories/outline-before-1.8.0-information-disclosure-via-orphaned-webhook-subscriptions cve-icon cve-icon
History

Tue, 20 Oct 2026 15:45:00 +0000

Type Values Removed Values Added
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.
Title Outline before 1.8.0 Information Disclosure via Orphaned Webhook Subscriptions
First Time appeared Getoutline
Getoutline outline
Weaknesses CWE-863
CPEs cpe:2.3:a:getoutline:outline:*:*:*:*:*:*:*:*
Vendors & Products Getoutline
Getoutline outline
References
Metrics cvssV3_1

{'score': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 6.9, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-20T15:40:36.179Z

Reserved: 2026-10-20T11:49:07.757Z

Link: CVE-2026-113611

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-20T16:17:11.633

Modified: 2026-10-20T16:17:11.633

Link: CVE-2026-113611

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses