I predicted people would start to be disappointed after being told their endorsement applications would be completed within 4 weeks!
https://community.isc2.org/t5/Certifications/CISSP-Endorsement-Wait/m-p/23073#M4143
As of today the queue is running at 6 weeks and 5 days.
https://community.isc2.org/t5/Certifications/CISSP-Endorsement-Wait/m-p/23073#M4152
Who is able to endorse you for the certification? Is it any ISC2 cert holder? Or the certifying body?
Yes, any ISC2 member can provide an endorsement for any ISC2 certification, or you can ask ISC2 to endorse you themselves.