vulnerability · Tue 15 Sep 2026 · 19:53 UTC
GHSA-8h4c-x2wg-6xp8: Http4s Ember accepts Transfer-Encoding combined with Content-Length (CL.TE request smuggling)
Filed UTCSource GTH ↗
Ember's HTTP/1.1 request parser does not reject a message that carries both a Transfer-Encoding and a Content-Length header. RFC 9112 §6.1 requires a server to treat such a message as a framing error and close the connection. An intermediary that follows the RFC's CL-strip-and-forward path (or that prioritises Content-Length) will frame the body differently from Ember, enabling HTTP request smuggling (CL.TE). …
Signals
as the pipeline stamped them- High
- Critical vulnerability
- What to do
- Critical severity — schedule an urgent patch.
CVE
KEV from CISA · EPSS from FIRST| Id | KEV | EPSS | Reference |
|---|---|---|---|
| CVE-2026-69204 | — | 0.57% | NVD ↗ |
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