Provide references for CVE-2021-4194.
Where can I find more information about CVE-2021-4194?
References are available at: https://huntr.dev/bounties/0bc8b3f7-9057-4eb7-a989-24cd5689f114, https://github.com/bookstackapp/bookstack/commit/cb0d674a71449de883713db2fcdccb6e108992ad.