http4s has HTTP/2 Denial of Service with Ember Backend
High-risk advisory
CVE-2026-54556
Summary
http4s has HTTP/2 Denial of Service with Ember Backend
Why it matters
GitHub has published a reviewed security advisory for org.http4s:http4s-ember-core_2.12. Prioritize it with other application dependency updates, especially because EPSS places it in the 22% percentile.
Operator check
Check whether org.http4s:http4s-ember-core_2.12 is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. CVSS score: 8.2. EPSS probability: 0.3%; percentile: 22%.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.