CVE-2021-3915
bookstack is vulnerable to Unrestricted Upload of File with Dangerous Type
Date published : 2021-11-13
https://huntr.dev/bounties/fcb65f2d-257a-46f4-bac9-f6ded5649079
https://github.com/bookstackapp/bookstack/commit/ae155d67454d6b9f6c93b2bb457aaa4b2eb1a9ed