{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-89044 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-89044 is a medium-severity vulnerability in Netty Netty, published on 10 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-2026-89044 and fix it if it is affected.\n\nWhat it is: CVE-2026-89044 is a medium-severity vulnerability in Netty Netty, published on 10 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-2026-89044 in the wild and no public exploit code.\n\nAffected product: Netty Netty. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-89044/ (Markdown: https://insights.sbomify.com/CVE-2026-89044/index.md)","id":"CVE-2026-89044","markdown":"https://insights.sbomify.com/CVE-2026-89044/index.md","name":"CVE-2026-89044","record":{"aliases":["CLEANSTART-2026-DD54267","CLEANSTART-2026-HA92776","CLEANSTART-2026-JI34331","CLEANSTART-2026-JM40588","CLEANSTART-2026-KP79659","CLEANSTART-2026-OZ38695","CLEANSTART-2026-TF82501","DEBIAN-CVE-2026-89044","GHSA-77qf-r755-9gcw","GHSA-hcvj-94mj-jp5c","UBUNTU-CVE-2026-89044"],"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":"Attackers can perform HTTP request smuggling by exploiting improper Transfer-Encoding validation in the Netty library, potentially bypassing security controls.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[{"product":"netty","vendor":"netty"}],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-444","name":"Inconsistent Interpretation of HTTP Requests"}],"description":"Netty versions 4.1.133.Final through 4.1.137.Final and 4.2.13.Final through 4.2.17.Final fail to properly validate the final transfer coding in the Transfer-Encoding header, allowing attackers to smuggle requests by using malformed encoding declarations. Attackers can split Transfer-Encoding headers across multiple lines or use values like 'chunked, xchunked' to bypass validation and decode messages as chunked when the final coding is not chunked, enabling request smuggling attacks.","ecosystems":[],"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":"Other in netty","id":"CVE-2026-89044","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"netty:netty","products":["netty:netty"],"type":"other","year":"2026"},"n_packages":0,"n_references":8,"next":{"headline":"zstd-jni 1.4.8-4 through 1.5.7-13 Denial of Service via Negative Length","id":"CVE-2026-89045"},"packages":[],"prev":{"headline":"passport-saml-encrypted through 0.1.13 XML Signature Wrapping via Assertion Prepending","id":"CVE-2026-89043"},"products":["netty"],"published":"2026-09-10","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":"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":"2026-09-18","vendors":["netty"]},"summary":"Attackers can perform HTTP request smuggling by exploiting improper Transfer-Encoding validation in the Netty library, potentially bypassing security controls.","url":"https://insights.sbomify.com/CVE-2026-89044/"}