{"answers":{"affected":"6 open source packages ship an affected version, including io.netty:netty, io.netty:netty-all and org.jboss.netty:netty. It affects 4 products.","exploited":"There is no known exploitation of CVE-2019-16869 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2019-16869 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 26 Sep 2019. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2019-16869 and fix it if it is affected.\n\nWhat it is: CVE-2019-16869 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 26 Sep 2019. 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-2019-16869 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- io.netty:netty (Maven): affected from 3.3.0.Final up to 4.0.0.Alpha8; no fix listed\n- io.netty:netty (Maven): affected from 3.3.0.Final up to 4.0.0.Alpha8; no fix listed\n- io.netty:netty-all (Maven): affected from 4.0.0.Beta1; fixed in 4.1.42.Final\n- io.netty:netty-all (Maven): affected from 4.0.0.Beta1; fixed in 4.1.42.Final\n- org.jboss.netty:netty (Maven): affected all versions up to 3.2.9.Final; no fix listed\n- org.jboss.netty:netty (Maven): affected all versions up to 3.2.9.Final; no fix listed\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-2019-16869/ (Markdown: https://insights.sbomify.com/CVE-2019-16869/index.md)","id":"CVE-2019-16869","markdown":"https://insights.sbomify.com/CVE-2019-16869/index.md","name":"CVE-2019-16869","record":{"aliases":["CLEANSTART-2025-OT57592","CLEANSTART-2026-BC52687","DEBIAN-CVE-2019-16869","DLA-1941-1","DSA-4597-1","GHSA-p979-4mfw-53vg","MINI-6fmw-g255-wrh6","MINI-6xm8-r3qj-cjjf","UBUNTU-CVE-2019-16869"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Netty HTTP library","requires_auth":"none","summary":"Netty mishandles whitespace in HTTP headers, enabling request smuggling attacks that bypass security controls or expose data.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"ubuntu_linux","vendor":"canonical"},{"product":"debian_linux","vendor":"debian"},{"product":"netty","vendor":"netty"},{"product":"jboss_enterprise_application_platform","vendor":"redhat"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-444","name":"Inconsistent Interpretation of HTTP Requests"}],"description":"Netty before 4.1.42.Final mishandles whitespace before the colon in HTTP headers (such as a \"Transfer-Encoding : chunked\" line), which leads to HTTP request smuggling.","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":"HTTP Request Smuggling in Netty","id":"CVE-2019-16869","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":"canonical:ubuntu_linux","products":["canonical:ubuntu_linux","debian:debian_linux","netty:netty","redhat:jboss_enterprise_application_platform"],"type":"other","year":"2019"},"n_packages":6,"n_references":81,"next":{"headline":"Auth bypass in n/a","id":"CVE-2019-16871"},"packages":[{"ecosystem":"Maven","fixed":[],"introduced":["3.3.0.Final"],"last_affected":["4.0.0.Alpha8"],"package":"io.netty:netty","purl":null,"source":"GHSA-p979-4mfw-53vg"},{"ecosystem":"Maven","fixed":[],"introduced":["3.3.0.Final"],"last_affected":["4.0.0.Alpha8"],"package":"io.netty:netty","purl":"pkg:maven/io.netty/netty","source":"GHSA-p979-4mfw-53vg"},{"ecosystem":"Maven","fixed":["4.1.42.Final"],"introduced":["4.0.0.Beta1"],"last_affected":[],"package":"io.netty:netty-all","purl":null,"source":"GHSA-p979-4mfw-53vg"},{"ecosystem":"Maven","fixed":["4.1.42.Final"],"introduced":["4.0.0.Beta1"],"last_affected":[],"package":"io.netty:netty-all","purl":"pkg:maven/io.netty/netty-all","source":"GHSA-p979-4mfw-53vg"},{"ecosystem":"Maven","fixed":[],"introduced":["0"],"last_affected":["3.2.9.Final"],"package":"org.jboss.netty:netty","purl":null,"source":"GHSA-p979-4mfw-53vg"},{"ecosystem":"Maven","fixed":[],"introduced":["0"],"last_affected":["3.2.9.Final"],"package":"org.jboss.netty:netty","purl":"pkg:maven/org.jboss.netty/netty","source":"GHSA-p979-4mfw-53vg"}],"prev":{"headline":"Path traversal in n/a","id":"CVE-2019-16868"},"products":["n/a"],"published":"2019-09-26","related":[{"cvss_score":9.8,"headline":"SaltStack Salt Authentication Bypass","id":"CVE-2020-11651","kev_date_added":"2021-11-03","published":"2020-04-30"},{"cvss_score":9.8,"headline":"OpenSMTPD Remote Code Execution","id":"CVE-2020-7247","kev_date_added":"2022-03-25","published":"2020-01-29"},{"cvss_score":9.8,"headline":"Exim Out-of-bounds Write","id":"CVE-2019-16928","kev_date_added":"2022-03-03","published":"2019-09-27"},{"cvss_score":9.8,"headline":"Exim Buffer Overflow","id":"CVE-2018-6789","kev_date_added":"2021-11-03","published":"2018-02-08"},{"cvss_score":9.8,"headline":"Oracle Java SE and Java SE Embedded Remote Code Execution","id":"CVE-2015-2590","kev_date_added":"2022-03-03","published":"2015-07-16"},{"cvss_score":9.8,"headline":"Oracle JRE Remote Code Execution","id":"CVE-2013-0422","kev_date_added":"2022-05-25","published":"2013-01-10"},{"cvss_score":9.8,"headline":"Oracle Java SE Runtime Environment (JRE) Arbitrary Code Execution","id":"CVE-2011-3544","kev_date_added":"2022-03-03","published":"2011-10-19"}],"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":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-08","vendors":["n/a"]},"summary":"Netty mishandles whitespace in HTTP headers, enabling request smuggling attacks that bypass security controls or expose data.","url":"https://insights.sbomify.com/CVE-2019-16869/"}