CVE-2021-23339
This affects all versions before 10.1.14 and from 10.2.0 to 10.2.4 of package com.typesafe.akka:akka-http-core. It allows multiple Transfer-Encoding headers.
Date published : 2021-02-17
https://github.com/akka/akka-http/pull/3754%23issuecomment-779265201