Sipwise C5 NGCP www_csc version 3.6.4 up to and including platform NGCP CE mr3.8.13 allows call/click2dial CSRF attacks for actions with administrative privileges.
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5649.php
https://www.zeroscience.mk/en/vulnerabilities
http://packetstormsecurity.com/files/162318/Sipwise-C5-NGCP-CSC-Cross-Site-Request-Forgery.html
http://lists.sipwise.com/pipermail/spce-user_lists.sipwise.com/2021-September/014708.html