Book Stack version 23.10.2 allows filtering local files on the server. This is possible because the application is vulnerable to SSRF.
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 |
|---|---|---|---|
| Bookstack | Bookstackapp | 23.10.2 (including) | 23.10.2 (including) |