{"answers":{"affected":"4 open source packages ship an affected version, including io.netty:netty-codec-http. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-42584 exists.","fix":"Upgrade io.netty:netty-codec-http to a fixed version for your release line: 4.1.133.Final or 4.2.13.Final.","what":"CVE-2026-42584 is a high-severity vulnerability in Netty Netty, published on 13 May 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-2026-42584 and fix it if it is affected.\n\nWhat it is: CVE-2026-42584 is a high-severity vulnerability in Netty Netty, published on 13 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-42584 exists.\n\nAffected packages and fixed versions:\n- io.netty:netty-codec-http (Maven): affected all versions; fixed in 4.1.133.Final\n- io.netty:netty-codec-http (Maven): affected all versions; fixed in 4.1.133.Final\n- io.netty:netty-codec-http (Maven): affected from 4.2.0.Alpha1; fixed in 4.2.13.Final\n- io.netty:netty-codec-http (Maven): affected from 4.2.0.Alpha1; fixed in 4.2.13.Final\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-2026-42584/ (Markdown: https://insights.sbomify.com/CVE-2026-42584/index.md)","id":"CVE-2026-42584","markdown":"https://insights.sbomify.com/CVE-2026-42584/index.md","name":"CVE-2026-42584","record":{"aliases":["CLEANSTART-2026-BW02780","CLEANSTART-2026-FU44475","CLEANSTART-2026-OB06695","CLEANSTART-2026-OX18786","CLEANSTART-2026-SS19101","CLEANSTART-2026-UB69946","DEBIAN-CVE-2026-42584","ECHO-69a3-3654-1d8c","GHSA-57rv-r2g8-2cj3","MINI-26vc-rg6j-w42r","MINI-27wg-f93v-rj2w","MINI-2m4j-xqhf-7mrc","MINI-2mmq-fjcj-r4fm","MINI-2pmf-34x2-9436","MINI-2v79-w638-6wqq","MINI-33mr-6hjc-x9p3","MINI-3467-mfmx-77v6","MINI-3cvr-492v-x7j7","MINI-3f86-2j5q-96qf","MINI-3g72-j5hh-656j","MINI-3xgc-ppgh-8wvm","MINI-478j-c5f4-g9r3","MINI-4839-ccvh-4jr8","MINI-4hqv-55m8-92mv","MINI-4vv9-9wv4-mv5r","MINI-4wv3-f5pp-gv2c","MINI-5j7g-5x4m-m2p5","MINI-667x-8rqg-5rgp","MINI-6f99-2v8j-p8wj","MINI-6fjh-wxcv-v36m","MINI-6gjv-8pqg-6fgq","MINI-6r92-rghw-5h8h","MINI-72qc-cj34-gcqw","MINI-72qr-44m2-fxm7","MINI-7qqf-m8mp-xj4j","MINI-7v5p-mpqq-8cg6","MINI-7w2x-56v9-45w2","MINI-7xpq-v9c3-x4j5","MINI-86qv-378h-43mj","MINI-8g89-9xp3-72p2","MINI-8h9p-f7jx-r224","MINI-8m58-xf48-958r","MINI-8w94-w6r4-m77v","MINI-942x-vm2h-fg2c","MINI-9wx4-fxgm-q87q","MINI-crfq-xmjw-6x9q","MINI-crvx-4359-xvrh","MINI-cvp4-phxc-2x9j","MINI-f43w-7x48-fjmg","MINI-f6rh-8q74-46x3","MINI-fg28-gq3w-96vr","MINI-fv5v-phhx-74qw","MINI-fw69-f6qm-7gcq","MINI-fwq8-38fq-wqw8","MINI-g43x-mvfw-75rr","MINI-g7rf-w5x5-599r","MINI-ggx6-62v9-pgwq","MINI-gm4h-8rvq-6q9m","MINI-gx7q-hxxf-h46m","MINI-h2m2-59q3-4786","MINI-h349-8vxj-5j7w","MINI-h55h-2f62-h256","MINI-h945-wpf4-rp2q","MINI-hj35-4qc2-8gvg","MINI-hmgj-rr6f-j7g3","MINI-jfgw-jf4h-3cj4","MINI-jpvv-wm9v-2r67","MINI-jqpx-3f6c-6mx7","MINI-jvw5-mfjc-gvj4","MINI-m2h4-xqmm-jvjc","MINI-m2r9-vjj3-6952","MINI-m2vh-8xx2-r5q7","MINI-m4p3-7vph-frv7","MINI-m8fw-mwmw-phwh","MINI-mg2r-39qp-89x8","MINI-mmmf-cmrh-q59v","MINI-mmx4-73x5-jw5f","MINI-mp4m-p9jp-636v","MINI-pgrc-fv66-7w9m","MINI-pwrv-57p4-j7g9","MINI-q342-h4gp-pv7v","MINI-q8h4-79j4-93q7","MINI-qgjf-hxmh-g29x","MINI-r2v5-r2qf-8pw5","MINI-r662-8frx-gq3g","MINI-rh5g-grhc-wrqr","MINI-rj7m-mjpv-5p58","MINI-rpwr-h5r7-v6r3","MINI-v246-qvjj-q72j","MINI-v47j-mxf6-jw23","MINI-v57q-428j-79v5","MINI-v57x-hvjq-5f9v","MINI-v9pf-mmxr-vpjm","MINI-vc3h-xvr9-c7ch","MINI-vf98-hc7g-fg34","MINI-vgq9-62v2-jr43","MINI-vwq9-fjf9-w65m","MINI-w27m-3m4c-m2rw","MINI-w5w6-6j4j-36gq","MINI-wjxx-5625-pvgh","MINI-wqxc-g2h4-rg48","MINI-wv5q-v8xr-xmhx","MINI-wvwp-4m86-4ww9","MINI-x649-7338-4mq5","MINI-x9cr-vx3v-wpqm","MINI-xc92-72m3-x2fj","MINI-xph5-6p48-gx5j","MINI-xqc6-jc9r-67vq","ROOT-APP-MAVEN-CVE-2026-42584","UBUNTU-CVE-2026-42584"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read","other"],"network_reachable":"yes","non_default_config":false,"product_category":"Netty HTTP codec","requires_auth":"none","summary":"Netty's HttpClientCodec mishandles 1xx responses, causing response desynchronization and potential data leakage or parsing errors in pipelined requests.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"netty","vendor":"netty"}],"cvss":{"score":7.3,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-444","name":"Inconsistent Interpretation of HTTP Requests"}],"description":"Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, HttpClientCodec pairs each inbound response with an outbound request by queue.poll() once per response, including for 1xx. If the client pipelines GET then HEAD and the server sends 103, then 200 with GET body, then 200 for HEAD, the queue pairs HEAD with the first 200. The HEAD rule then skips reading that message’s body, so the GET entity bytes stay on the stream and the following 200 is parsed from the wrong offset. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.","ecosystems":["Maven"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Netty: HttpClientCodec response desynchronization","id":"CVE-2026-42584","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":"netty:netty","products":["netty:netty"],"type":"other","year":"2026"},"n_packages":4,"n_references":1,"next":{"headline":"Netty: HTTP Request Smuggling due to malformed Transfer-Encoding","id":"CVE-2026-42585"},"packages":[{"ecosystem":"Maven","fixed":["4.1.133.Final"],"introduced":["0"],"last_affected":[],"package":"io.netty:netty-codec-http","purl":null,"source":"GHSA-57rv-r2g8-2cj3"},{"ecosystem":"Maven","fixed":["4.1.133.Final"],"introduced":["0"],"last_affected":[],"package":"io.netty:netty-codec-http","purl":"pkg:maven/io.netty/netty-codec-http","source":"GHSA-57rv-r2g8-2cj3"},{"ecosystem":"Maven","fixed":["4.2.13.Final"],"introduced":["4.2.0.Alpha1"],"last_affected":[],"package":"io.netty:netty-codec-http","purl":null,"source":"GHSA-57rv-r2g8-2cj3"},{"ecosystem":"Maven","fixed":["4.2.13.Final"],"introduced":["4.2.0.Alpha1"],"last_affected":[],"package":"io.netty:netty-codec-http","purl":"pkg:maven/io.netty/netty-codec-http","source":"GHSA-57rv-r2g8-2cj3"}],"prev":{"headline":"Netty: Lz4FrameDecoder resource exhaustion","id":"CVE-2026-42583"},"products":["netty","netty-codec-http"],"published":"2026-05-13","related":[{"cvss_score":9.1,"headline":"Netty: SNI Routing Bypass via Fragmented TLS ClientHello Causing Fallback to Default SslContext","id":"CVE-2026-75595","kev_date_added":null,"published":"2026-08-19"},{"cvss_score":8.7,"headline":"Netty: Fragmented ClientHello records trigger quadratic pre-handshake reassembly in default SNI parsing","id":"CVE-2026-75596","kev_date_added":null,"published":"2026-08-19"},{"cvss_score":8.7,"headline":"Netty Bzip2Decoder: Infinite Loop in RLE State Machine Leads to Event-Loop Thread Hang","id":"CVE-2026-59901","kev_date_added":null,"published":"2026-07-29"},{"cvss_score":8.7,"headline":"Netty codec-haproxy: Signed-Byte Sentinel Collision in HAProxyMessageDecoder Leads to Unbounded Memory Exhaustion","id":"CVE-2026-55851","kev_date_added":null,"published":"2026-07-21"},{"cvss_score":8.7,"headline":"Netty SpdyHttpDecoder: ByteBuf Reference Leak on RST_STREAM Leads to Native Memory Exhaustion","id":"CVE-2026-56745","kev_date_added":null,"published":"2026-07-21"},{"cvss_score":8.7,"headline":"Netty Vulnerable to DNS Cache Poisoning via Missing Bailiwick Checks in CNAME Records","id":"CVE-2026-45674","kev_date_added":null,"published":"2026-06-12"},{"cvss_score":8.7,"headline":"Netty has Insufficient Bailiwick Validation for NS Records","id":"CVE-2026-47691","kev_date_added":null,"published":"2026-06-12"}],"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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-18","vendors":["io.netty","netty"]},"summary":"Netty's HttpClientCodec mishandles 1xx responses, causing response desynchronization and potential data leakage or parsing errors in pipelined requests.","url":"https://insights.sbomify.com/CVE-2026-42584/"}