VULNRABLE / Vulnerability / CVE-2026-69204

CVE-2026-69204

CRITICAL WATCH org.http4s:http4s-ember-core_2.12 GHSA

Exploit verdict: CVSS 9.5 · critical severity

CVSS Score

9.5

Severity

CRITICAL

EPSS

Source

GHSA

Summary

Http4s Ember accepts Transfer-Encoding combined with Content-Length (CL.TE request smuggling)

What this means

CVE-2026-69204 is a critical-severity vulnerability affecting org.http4s:http4s-ember-core_2.12, rated CVSS 9.5. The EPSS model estimates a 0% probability of exploitation in the next 30 days. Published September 16, 2026.

View full advisory at GHSA →