{"answers":{"affected":"10 open source packages ship an affected version, including org.http4s:http4s-ember-core_2.13, org.http4s:http4s-ember-core_2.12 and org.http4s:http4s-ember-core_3.","exploited":"There is no known exploitation of CVE-2026-69204 in the wild and no public exploit code.","fix":"Upgrade org.http4s:http4s-ember-core_2.13 to a fixed version for your release line: 0.23.35 or 1.0.0-M47.","what":"CVE-2026-69204 is a critical vulnerability in http4s, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-69204 and fix it if it is affected.\n\nWhat it is: CVE-2026-69204 is a critical vulnerability in http4s, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-69204 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.http4s:http4s-ember-core_2.13 (Maven): affected all versions; fixed in 0.23.35\n- org.http4s:http4s-ember-core_2.13 (Maven): affected all versions; fixed in 0.23.35\n- org.http4s:http4s-ember-core_2.13 (Maven): affected from 1.0.0-M1; fixed in 1.0.0-M47\n- org.http4s:http4s-ember-core_2.13 (Maven): affected from 1.0.0-M1; fixed in 1.0.0-M47\n- org.http4s:http4s-ember-core_2.12 (Maven): affected all versions; fixed in 0.23.35\n- org.http4s:http4s-ember-core_2.12 (Maven): affected all versions; fixed in 0.23.35\n- org.http4s:http4s-ember-core_3 (Maven): affected all versions; fixed in 0.23.35\n- org.http4s:http4s-ember-core_3 (Maven): affected all versions; fixed in 0.23.35\n- org.http4s:http4s-ember-core_3 (Maven): affected from 1.0.0-M1; fixed in 1.0.0-M47\n- org.http4s:http4s-ember-core_3 (Maven): affected from 1.0.0-M1; fixed in 1.0.0-M47\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-69204/ (Markdown: https://insights.sbomify.com/CVE-2026-69204/index.md)","id":"CVE-2026-69204","markdown":"https://insights.sbomify.com/CVE-2026-69204/index.md","name":"CVE-2026-69204","record":{"aliases":["GHSA-8h4c-x2wg-6xp8"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Scala HTTP library","requires_auth":"none","summary":"Attackers can exploit request smuggling in Http4s Ember to bypass access controls or poison caches when behind specific intermediaries.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":9.2,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-444","name":"Inconsistent Interpretation of HTTP Requests"}],"description":"Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, Ember HTTP/1.1 does not reject messages containing both Transfer-Encoding and Content-Length, so an intermediary and Ember can select different body framing rules. When ember-server is behind a keep-alive intermediary that forwards both headers and frames by Content-Length, an unauthenticated attacker can smuggle a second request, bypass intermediary access controls, poison caches, or cause a victim request to be joined to an attacker-controlled prefix. The shared response parser can also desynchronize an ember-client connection when a malicious or compromised upstream sends both headers. This issue is fixed in versions 0.23.35 and 1.0.0-M47.","ecosystems":["Maven"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Http4s: Ember accepts Transfer-Encoding combined with Content-Length (CL.TE request smuggling)","id":"CVE-2026-69204","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"other","year":"2026"},"n_packages":10,"n_references":4,"next":{"headline":"Http4s: Ember Transfer-Encoding value parsing (TE.CL / TE.0 request smuggling)","id":"CVE-2026-69205"},"packages":[{"ecosystem":"Maven","fixed":["0.23.35"],"introduced":["0"],"last_affected":[],"package":"org.http4s:http4s-ember-core_2.12","purl":null,"source":"GHSA-8h4c-x2wg-6xp8"},{"ecosystem":"Maven","fixed":["0.23.35"],"introduced":["0"],"last_affected":[],"package":"org.http4s:http4s-ember-core_2.12","purl":"pkg:maven/org.http4s/http4s-ember-core_2.12","source":"GHSA-8h4c-x2wg-6xp8"},{"ecosystem":"Maven","fixed":["0.23.35"],"introduced":["0"],"last_affected":[],"package":"org.http4s:http4s-ember-core_2.13","purl":null,"source":"GHSA-8h4c-x2wg-6xp8"},{"ecosystem":"Maven","fixed":["0.23.35"],"introduced":["0"],"last_affected":[],"package":"org.http4s:http4s-ember-core_2.13","purl":"pkg:maven/org.http4s/http4s-ember-core_2.13","source":"GHSA-8h4c-x2wg-6xp8"},{"ecosystem":"Maven","fixed":["1.0.0-M47"],"introduced":["1.0.0-M1"],"last_affected":[],"package":"org.http4s:http4s-ember-core_2.13","purl":null,"source":"GHSA-8h4c-x2wg-6xp8"},{"ecosystem":"Maven","fixed":["1.0.0-M47"],"introduced":["1.0.0-M1"],"last_affected":[],"package":"org.http4s:http4s-ember-core_2.13","purl":"pkg:maven/org.http4s/http4s-ember-core_2.13","source":"GHSA-8h4c-x2wg-6xp8"},{"ecosystem":"Maven","fixed":["0.23.35"],"introduced":["0"],"last_affected":[],"package":"org.http4s:http4s-ember-core_3","purl":null,"source":"GHSA-8h4c-x2wg-6xp8"},{"ecosystem":"Maven","fixed":["0.23.35"],"introduced":["0"],"last_affected":[],"package":"org.http4s:http4s-ember-core_3","purl":"pkg:maven/org.http4s/http4s-ember-core_3","source":"GHSA-8h4c-x2wg-6xp8"},{"ecosystem":"Maven","fixed":["1.0.0-M47"],"introduced":["1.0.0-M1"],"last_affected":[],"package":"org.http4s:http4s-ember-core_3","purl":null,"source":"GHSA-8h4c-x2wg-6xp8"},{"ecosystem":"Maven","fixed":["1.0.0-M47"],"introduced":["1.0.0-M1"],"last_affected":[],"package":"org.http4s:http4s-ember-core_3","purl":"pkg:maven/org.http4s/http4s-ember-core_3","source":"GHSA-8h4c-x2wg-6xp8"}],"prev":{"headline":"Http4s Ember HTTP/2: does not enforce SETTINGS_MAX_CONCURRENT_STREAMS","id":"CVE-2026-69203"},"products":["http4s"],"published":"2026-09-15","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-15","vendors":["http4s"]},"summary":"Attackers can exploit request smuggling in Http4s Ember to bypass access controls or poison caches when behind specific intermediaries.","url":"https://insights.sbomify.com/CVE-2026-69204/"}