system
Provide references for <CVE-2020-1900>.
user
Where can I find more information about <CVE-2020-1900>?
assistant
References are available at: https://hhvm.com/blog/2020/06/30/security-update.html, https://github.com/facebook/hhvm/commit/c1c4bb0cf9e076aafaf4ff3515556ef9faf906f3.