CNCF Envoy through 1.13.0 may consume excessive amounts of memory when proxying HTTP/1.1 requests or responses with many small (i.e. 1 byte) chunks.
https://www.envoyproxy.io/docs/envoy/v1.13.1/intro/version_history
https://lists.debian.org/debian-lts-announce/2022/05/msg00025.html
https://github.com/envoyproxy/envoy/security/advisories/GHSA-jwcm-4pwp-c2qv