Provide references for CVE-2021-23385.
Where can I find more information about CVE-2021-23385?
References are available at: https://security.snyk.io/vuln/SNYK-PYTHON-FLASKSECURITY-1293234, https://github.com/mattupstate/flask-security, https://snyk.io/blog/url-confusion-vulnerabilities/, https://lists.debian.org/debian-lts-announce/2023/08/msg00034.html.