A vulnerability was discovered on one of Facebooks servers. Facebook has a Bug Bounty program to find vulnerabilities on big services that allow it. The vulnerability was fixed by Facebook, but the vulnerability was not fixed until the flaw was disclosed. Facebook acknowledged the vulnerability and then notified me about the patch being in place. I found a vulnerability on Facebook’s Sentry service hosted on 199.201.65.00.0/24, with the hostname sentryagreements.thefacebook.com.com.”]
Source: https://blog.scrt.ch/2018/08/24/remote-code-execution-on-a-facebook-server/