CVE-2026-63313 9Router before 0.4.72 Server-Side Request Forgery via /v1/web/fetch
An authenticated user can exploit SSRF in 9Router to access internal services and cloud metadata credentials via the /v1/web/fetch endpoint.
- 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-2026-63313?
CVE-2026-63313 is a high-severity server-side request forgery vulnerability in decolua 9router, published on 23 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
9Router before 0.4.72 contains a server-side request forgery (SSRF) vulnerability in the /v1/web/fetch endpoint. The endpoint accepts a user-controlled url parameter and passes it to a configured external scraping provider (Firecrawl, Jina Reader, Tavily, or Exa) to fetch content. The URL is only validated as syntactically valid via new URL() with no blocklist for private IP ranges, cloud metadata endpoints (e.g., 169.254.169.254), link-local addresses, or internal hostnames. An authenticated or locally-connected user can cause the server to fetch arbitrary internal URLs and have the response content returned, enabling read-access SSRF that can expose cloud metadata credentials, reach internal services, and bypass authentication on localhost endpoints.
Weakness: CWE-918
Which versions are affected by CVE-2026-63313?
How do I fix CVE-2026-63313?
No fix has been published for CVE-2026-63313 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-2026-63313 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-63313 exists.
Sources
Also known as GHSA-5853-q5hg-7gx5.