The Fusion Builder WordPress plugin before 3.6.2, used in the Avada theme, does not validate a parameter in its forms which could be used to initiate arbitrary HTTP requests. The data returned is then reflected back in the applications response. This could be used to interact with hosts on the servers local network bypassing firewalls and access control measures.
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Fusion_builder | Fusion_builder_project | * | 3.6.2 (excluding) |
| Avada | Theme-fusion | * | 7.6.2 (excluding) |