CVE-2026-72598: Apioo Fusio

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Apioo Fusio: up to and including 8.8.3

Published 2026-08-11. Last modified 2026-09-03.