The web-push crate before 0.10.3 for Rust allows a denial of service (memory consumption) in the built-in clients via a large integer in a Content-Length header.
Exploitability
AV:NAC:HPR:NUI:NScope
S:CImpact
C:NI:NA:L4/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:LOther