Http4s Ember accepts Transfer-Encoding combined with Content-Length (CL.TE request smuggling)
Critical vendor advisory
CVE-2026-69204
Summary
Http4s Ember accepts Transfer-Encoding combined with Content-Length (CL.TE request smuggling)
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.
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: 9.2.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.