{"id":"CVE-2026-33870","summary":"Netty: HTTP Request Smuggling via Chunked Extension Quoted-String Parsing","details":"Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, Netty incorrectly parses quoted strings in HTTP/1.1 chunked transfer encoding extension values, enabling request smuggling attacks. Versions 4.1.132.Final and 4.2.10.Final fix the issue.","aliases":["GHSA-pwqr-wmgm-9rr8"],"modified":"2026-05-28T03:53:29.226364516Z","published":"2026-03-27T19:54:15.586Z","related":["CGA-wf6r-m9m7-hvjf","SUSE-SU-2026:1353-1","openSUSE-SU-2026:10463-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33870.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-444"]},"references":[{"type":"WEB","url":"https://w4ke.info/2025/06/18/funky-chunks.html"},{"type":"WEB","url":"https://w4ke.info/2025/10/29/funky-chunks-2.html"},{"type":"WEB","url":"https://www.rfc-editor.org/rfc/rfc9110"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33870.json"},{"type":"ADVISORY","url":"https://github.com/netty/netty/security/advisories/GHSA-pwqr-wmgm-9rr8"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33870"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/netty/netty","events":[{"introduced":"5451fbb0effd8460f57013bb33aefeb953144ed9"},{"fixed":"4cc98736c3947bc93122e0b64e0bd8fc970c6437"}]}],"versions":["netty-4.2.9.Final","netty-4.2.8.Final","netty-4.2.7.Final","netty-4.2.6.Final","netty-4.2.5.Final","netty-4.2.4.Final","netty-4.2.3.Final","netty-4.2.2.Final","netty-4.2.1.Final","netty-4.2.0.Final","netty-4.2.0.RC4","netty-4.2.0.RC3","netty-4.2.0.RC2","netty-4.2.0.RC1","netty-4.2.0.Beta1","netty-4.2.0.Alpha5","netty-4.2.0.Alpha4","netty-4.2.0.Alpha3","netty-4.2.0.Alpha2","netty-4.2.0.Alpha1"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-33870.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}