A vulnerability was found in benoitc hackney up to 4.0.0 . It has been declared as problematic . Affected is an unknown function of the file src/hackney_altsvc.erl of the component Alt-Svc Response Header Parser . Executing a manipulation can lead to infinite loop. This vulnerability appears as CVE-2026-47066 . The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.