DoS via HPACK bomb attack
An HTTP/2 implementation built using the priority library could be targetted for a denial of service attack based on HPACK, specifically a so-called "HPACK Bomb" attack.
Advisories for Pypi/Hpack package
2017
An HTTP/2 implementation built using the priority library could be targetted for a denial of service attack based on HPACK, specifically a so-called "HPACK Bomb" attack.