Description
The setWebhookResolver in packages/api/src/resolvers/webhooks/index.ts stores the caller-supplied url without any address validation, and the file imports no validation helper. When a subscribed event fires, callWebhook in packages/api/src/jobs/call_webhook.ts issues axios.request with that url, the method and Content-Type recorded on the webhook, and a JSON body carrying the event data, so an authenticated user can make the server send repeated attacker-shaped requests to internal endpoints, including link-local metadata addresses. The request is blind: callWebhook discards the result and writes only a success line or the axios error to the server log, so the response is not returned through the API.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| omnivore-app | omnivore | < c4d7d8562e6b9aabb1d8e4dabca268e314baa43a |
References
- https://github.com/omnivore-app/omnivore
- https://github.com/omnivore-app/omnivore/blob/0d66408746788e07cec43928581b2567308ab575/packages/api/src/jobs/call_webhook.ts#L36
- https://github.com/omnivore-app/omnivore/blob/0d66408746788e07cec43928581b2567308ab575/packages/api/src/resolvers/webhooks/index.ts#L108
- https://github.com/omnivore-app/omnivore/commit/c4d7d8562e6b9aabb1d8e4dabca268e314baa43a
- https://github.com/omnivore-app/omnivore/issues/4647
- https://www.vulncheck.com/advisories/omnivore-stored-server-side-request-forgery-via-the-setwebhook-mutation
- https://github.com/omnivore-app/omnivore/issues/4647
Timeline
- Published
- Aug 20, 2026
- Last modified
- Sep 24, 2026
- NVD status
- Deferred