CVE-2026-72598 Apioo Fusio - Server-Side Request Forgery
Authenticated users can trigger server-side requests to internal network addresses via webhook registration, potentially exposing internal services.
- 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-2026-72598?
CVE-2026-72598 is a medium-severity server-side request forgery vulnerability in Apioo Fusio, published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A server-side request forgery vulnerability in Apioo Fusio 8.8.3 allows authenticated consumer-role users to make the server issue HTTP requests to internal network addresses by registering a webhook URL pointing to an internal host. The webhook registration endpoint validates URL syntax via FILTER_VALIDATE_URL but applies no IP or host denylist. When the registered event fires, the server issues an HTTP POST to the attacker-supplied internal URL.
Weakness: CWE-918
Which versions are affected by CVE-2026-72598?
How do I fix CVE-2026-72598?
No fix has been published for CVE-2026-72598 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-2026-72598 being exploited?
There is no known exploitation of CVE-2026-72598 in the wild and no public exploit code.
Sources
Also known as GHSA-gfrj-pxwg-9r69.