{"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-2025-67735 exists.","fix":"Upgrade io.netty:netty-codec-http to a fixed version for your release line: 4.1.129.Final or 4.2.8.Final.","what":"CVE-2025-67735 is a medium-severity vulnerability in Netty Netty, published on 16 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-67735 and fix it if it is affected.\n\nWhat it is: CVE-2025-67735 is a medium-severity vulnerability in Netty Netty, published on 16 Dec 2025. 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-2025-67735 exists.\n\nAffected packages and fixed versions:\n- io.netty:netty-codec-http (Maven): affected all versions; fixed in 4.1.129.Final\n- io.netty:netty-codec-http (Maven): affected all versions; fixed in 4.1.129.Final\n- io.netty:netty-codec-http (Maven): affected from 4.2.0.Alpha1; fixed in 4.2.8.Final\n- io.netty:netty-codec-http (Maven): affected from 4.2.0.Alpha1; fixed in 4.2.8.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-2025-67735/ (Markdown: https://insights.sbomify.com/CVE-2025-67735/index.md)","id":"CVE-2025-67735","markdown":"https://insights.sbomify.com/CVE-2025-67735/index.md","name":"CVE-2025-67735","record":{"aliases":["CLEANSTART-2026-CE96605","CLEANSTART-2026-EA68538","CLEANSTART-2026-QD78473","CLEANSTART-2026-YX43622","CLSA-2026-1777941815","CLSA-2026-1792688648","DEBIAN-CVE-2025-67735","ECHO-a5b0-7bf4-eb62","GHSA-84h7-rjj3-6jx4","MINI-28f5-j56w-xx72","MINI-29pm-5grp-93j6","MINI-34px-6jcv-h975","MINI-35f5-rr26-33mq","MINI-3fxj-qcp7-xq6m","MINI-3rw8-r982-8v3j","MINI-47xm-ghf3-hgpp","MINI-4c6h-7fqg-2vpx","MINI-4jq4-wfxg-gxfv","MINI-52gc-3823-39hx","MINI-579g-5vw3-3hg5","MINI-59gr-c33p-g9p2","MINI-5wqh-r5vw-6pvm","MINI-6cfm-qpmm-7wpm","MINI-6p6h-vjrc-328q","MINI-73pv-6j82-jgqg","MINI-88c9-5g25-hhqm","MINI-8hr2-4vv3-7v5h","MINI-935m-jvj5-vcgx","MINI-9v2j-cjxp-xm2p","MINI-c9jg-49v6-q382","MINI-f4c3-2wvq-f764","MINI-f6c2-cjph-pm93","MINI-fh92-fcc2-258v","MINI-fjwg-vhmh-8cp3","MINI-fqp8-56gw-55mf","MINI-fvr2-hv3x-8mqr","MINI-fvww-8963-w4p7","MINI-fwjw-36pm-m4jp","MINI-fxfh-mjvq-7h27","MINI-g336-92cv-53qm","MINI-ghvr-r6vc-23f8","MINI-h7gq-3cx5-3vcm","MINI-h7x3-cwjg-2j4x","MINI-hmmm-x9vr-8whv","MINI-hv4v-5hm8-3f2x","MINI-hw52-m64r-g94v","MINI-j2m6-q42q-r4rf","MINI-m5q6-m5x7-7p28","MINI-mmcr-59xf-f683","MINI-mv8q-352r-4x87","MINI-p74m-45pq-wqhv","MINI-p78f-hwjr-fvqr","MINI-pgwq-p3ch-7gp5","MINI-q4vm-2hj7-64rg","MINI-qfv4-44w2-67mg","MINI-qgmm-8j39-m7xr","MINI-qmxm-g69x-9fp3","MINI-qxc3-c3j2-v9c8","MINI-r78q-8h6g-hq23","MINI-rmrc-fxr5-8wgx","MINI-rr29-25m5-99cw","MINI-rxfr-mwwc-m2mf","MINI-v9p9-2jgr-wvgq","MINI-vr76-5gpx-hf68","MINI-vv6g-jhvw-3j5j","MINI-wrg5-3gx5-hmm3","MINI-wrp8-52vj-88hr","MINI-x3rf-pxg2-4xm6","MINI-x4c5-vppw-v8xq","MINI-xg6v-v9g9-x547","MINI-xp73-3792-ffh8","ROOT-APP-MAVEN-CVE-2025-67735","SUSE-SU-2025:4489-1","UBUNTU-CVE-2025-67735","openSUSE-SU-2025:15824-1"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_modify","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Java network framework","requires_auth":"none","summary":"Attackers can perform HTTP request smuggling via CRLF injection in Netty's HttpRequestEncoder, affecting applications using this library.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"netty","vendor":"netty"}],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-93","name":"Improper Neutralization of CRLF Sequences"}],"description":"Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.129.Final and 4.2.8.Final, the `io.netty.handler.codec.http.HttpRequestEncoder` has a CRLF injection with the request URI when constructing a request. This leads to request smuggling when `HttpRequestEncoder` is used without proper sanitization of the URI. Any application / framework using `HttpRequestEncoder` can be subject to be abused to perform request smuggling using CRLF injection. Versions 4.1.129.Final and 4.2.8.Final fix the issue.","ecosystems":["Maven","SUSE:Linux Enterprise Module for Package Hub 15 SP7","openSUSE:Leap 15.6","openSUSE:Tumbleweed"],"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 has a CRLF Injection vulnerability in io.netty.handler.codec.http.HttpRequestEncoder","id":"CVE-2025-67735","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":"netty:netty","products":["netty:netty"],"type":"other","year":"2025"},"n_packages":7,"n_references":1,"next":{"headline":"Authenticated SQL Injection in FreePBX tts (Text To Speech) module","id":"CVE-2025-67736"},"packages":[{"ecosystem":"Maven","fixed":["4.1.129.Final"],"introduced":["0"],"last_affected":[],"package":"io.netty:netty-codec-http","purl":null,"source":"GHSA-84h7-rjj3-6jx4"},{"ecosystem":"Maven","fixed":["4.1.129.Final"],"introduced":["0"],"last_affected":[],"package":"io.netty:netty-codec-http","purl":"pkg:maven/io.netty/netty-codec-http","source":"GHSA-84h7-rjj3-6jx4"},{"ecosystem":"Maven","fixed":["4.2.8.Final"],"introduced":["4.2.0.Alpha1"],"last_affected":[],"package":"io.netty:netty-codec-http","purl":null,"source":"GHSA-84h7-rjj3-6jx4"},{"ecosystem":"Maven","fixed":["4.2.8.Final"],"introduced":["4.2.0.Alpha1"],"last_affected":[],"package":"io.netty:netty-codec-http","purl":"pkg:maven/io.netty/netty-codec-http","source":"GHSA-84h7-rjj3-6jx4"},{"ecosystem":"SUSE:Linux Enterprise Module for Package Hub 15 SP7","fixed":["4.1.130-150200.4.40.1"],"introduced":["0"],"last_affected":[],"package":"netty","purl":"pkg:rpm/suse/netty\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP7","source":"SUSE-SU-2025:4489-1"},{"ecosystem":"openSUSE:Leap 15.6","fixed":["4.1.130-150200.4.40.1"],"introduced":["0"],"last_affected":[],"package":"netty","purl":"pkg:rpm/opensuse/netty\u0026distro=openSUSE%20Leap%2015.6","source":"SUSE-SU-2025:4489-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["4.1.130-1.1"],"introduced":["0"],"last_affected":[],"package":"netty","purl":"pkg:rpm/opensuse/netty\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2025:15824-1"}],"prev":{"headline":"Frappe Authenticated Users can Execute JavaScript through its Job Form","id":"CVE-2025-67734"},"products":["netty"],"published":"2025-12-16","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":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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":"2025-12-16","vendors":["netty"]},"summary":"Attackers can perform HTTP request smuggling via CRLF injection in Netty's HttpRequestEncoder, affecting applications using this library.","url":"https://insights.sbomify.com/CVE-2025-67735/"}