CVE-2026-77066 Omnivore Server-Side Request Forgery via the scanFeeds GraphQL Query
An authenticated user can exploit a missing URL validation in the scanFeeds resolver to perform Server-Side Request Forgery, accessing internal endpoints and leaking metadata.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-77066?
CVE-2026-77066 is a medium-severity server-side request forgery vulnerability in omnivore-app omnivore, published on 20 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The scanFeedsResolver in packages/api/src/resolvers/subscriptions/index.ts passes the caller-supplied url straight to axios.get(url, rssParserConfig()) with no address validation. The same file guards the subscribe path with validateUrl(), which rejects private and reserved ranges through the private-ip library, and createPageSaveRequest applies the same check, so the omission is specific to this resolver. An authenticated user can direct the server to request arbitrary internal endpoints. The response is parsed as a feed or as HTML and the resolver returns the resulting url, title, description and type fields, so disclosure is limited to feed-shaped metadata and to link elements advertising RSS or Atom feeds; requests that do not parse still distinguish reachable ports from unreachable ones through the resulting error.
Weakness: CWE-918
Which versions are affected by CVE-2026-77066?
How do I fix CVE-2026-77066?
No fix has been published for CVE-2026-77066 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-77066 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-77066 exists.
Sources
Also known as GHSA-w9wc-vx4j-8xwg.