CVE-2026-113611 json
Outline before 1.8.0 Information Disclosure via Orphaned Webhook Subscriptions
published 20d ago modified 18d ago also EUVD-2026-105089
- cvss
- 4.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 45%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- outline outline 1.8.0
Is CVE-2026-113611 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 18d ago
Exploit prediction
0.54% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/outline/outline/security/advisories/GHSA-33jq-x32c-3ccw referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 6.9 | 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 |
| CNA | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N |
| CNA | 4.0 | 6.9 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- outline outline
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
-
github.com
/outline/outline/commit/e044014cea958962fc9f5e2b8f6ff1d8cadd676f
patch
-
github.com
/outline/outline/security/advisories/GHSA-33jq-x32c-3ccw
vendor-advisory, exploit
-
github.com
/outline/outline/releases/tag/v1.8.0
release-notes
-
github.com
/outline/outline/blob/v1.7.1/server/queues/processors/UserDeletedProcessor.ts
technical-description
-
vulncheck.com
/advisories/outline-before-1.8.0-information-disclosure-via-orphaned-webhook-subscriptions
third-party-advisory
Sources
- CVE List CVE-2026-113611
- NVD CVE-2026-113611
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.