AIKIDO-2026-180154
http4s-ember-core_3 is vulnerable to Denial of Service (DoS)
75
High Risk
This Affects:
http4s-ember-core_3TL;DR
Ember's HTTP/2 server registers each peer-initiated stream without enforcing a maximum concurrent stream count. A remote peer opens an unbounded number of concurrent streams, each allocating connection state and buffers. This exhausts server memory and denies service without authentication.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you serve HTTP/2 traffic with the Ember backend.
Background info
http4s-ember-core_3 is vulnerable to Denial of Service (DoS) in versions 0.23.9 - 0.23.34.
How to fix this
Upgrade the org.http4s:http4s-ember-core_3 library to the patch version.
Are You Affected?
Connect your repositories to instantly see whether vulnerable or malicious packages exist in your codebase.
Free. No credit card required.
I consent to receiving marketing communications based on Aikido’s Privacy Policy.
SOC 2Compliant
ISO 27001CompliantISO 42001Compliant
FedRAMPImplementing© All Intel data is openly available and commercially licensed.