---
id: CVE-2026-77067
title: >-
  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
summary: >-
  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/s…
severity: medium
cvss: 5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N'
cwe:
  - CWE-918
vendor: omnivore-app
product: omnivore
affected:
  - omnivore < c4d7d8562e6b9aabb1d8e4dabca268e314baa43a
published: '2026-08-20'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T20:06:30.133'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77067'
references:
  - url: 'https://github.com/omnivore-app/omnivore'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/omnivore-app/omnivore/blob/0d66408746788e07cec43928581b2567308ab575/packages/api/src/jobs/call_webhook.ts#L36
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/omnivore-app/omnivore/blob/0d66408746788e07cec43928581b2567308ab575/packages/api/src/resolvers/webhooks/index.ts#L108
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/omnivore-app/omnivore/commit/c4d7d8562e6b9aabb1d8e4dabca268e314baa43a
    label: disclosure@vulncheck.com
  - url: 'https://github.com/omnivore-app/omnivore/issues/4647'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/omnivore-stored-server-side-request-forgery-via-the-setwebhook-mutation
    label: disclosure@vulncheck.com
  - url: 'https://github.com/omnivore-app/omnivore/issues/4647'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00385
epssPercentile: 0.29714
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-08-20T14:48:05.490595Z'
ingestedAt: '2026-09-24T15:45:56.699Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.