CVE-2026-11424 Server-Side Request Forgery in Altium Platform Design GraphQL Service Allows Information Disclosure
Authenticated attackers can exploit SSRF in Altium's GraphQL service to access internal endpoints and retrieve sensitive data via HTTP GET requests.
- 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-2026-11424?
CVE-2026-11424 is a high-severity server-side request forgery vulnerability in Altium 365, published on 5 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A server-side request forgery (SSRF) vulnerability exists in a GraphQL service component shared by Altium Enterprise Server and Altium 365. An authenticated user can submit a request whose input is treated as a URL by the server and used to issue an outbound HTTP GET request without URL validation or destination filtering. The response body is then returned to the user.
This allows an authenticated attacker to reach internal services and metadata endpoints that would not otherwise be accessible from the public network, and to retrieve their contents. The impact is information disclosure and internal infrastructure reconnaissance; the request primitive is limited to HTTP GET with no custom headers. Altium Enterprise Server is fixed in 8.1.1; the issue has been remediated in Altium 365 at the service level.
Which versions are affected by CVE-2026-11424?
How do I fix CVE-2026-11424?
No fix has been published for CVE-2026-11424 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-2026-11424 being exploited?
There is no known exploitation of CVE-2026-11424 in the wild and no public exploit code.
Sources
Also known as GHSA-v97p-56pc-586g.