Provide references for CVE-2021-44663.
Where can I find more information about CVE-2021-44663?
References are available at: https://www.xerte.org.uk/index.php/en/news/blog/80-news/336-xerte-3-8-5-important-security-update-now-available, https://github.com/thexerteproject/xerteonlinetoolkits/commit/694a591b5ab7f634f036afaac10397cf3677a98c, https://riklutz.nl/2021/10/30/unauthenticated-file-upload-to-remote-code-execution-in-xerte/.