Provide references for CVE-2021-44981.
Where can I find more information about CVE-2021-44981?
References are available at: https://websec.nl/blog/61b2b37a43a1155c848f3b08/websec%20finds%20critical%20vulnerabilities%20in%20popular%20media%20server, https://github.com/QuickBox/QB/issues/202.