{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-33870","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-03-24T15:10:05.678Z","datePublished":"2026-03-27T19:54:15.586Z","dateUpdated":"2026-03-31T13:55:47.863Z"},"containers":{"cna":{"title":"Netty: HTTP Request Smuggling via Chunked Extension Quoted-String Parsing","problemTypes":[{"descriptions":[{"cweId":"CWE-444","lang":"en","description":"CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/netty/netty/security/advisories/GHSA-pwqr-wmgm-9rr8","tags":["x_refsource_CONFIRM"],"url":"https://github.com/netty/netty/security/advisories/GHSA-pwqr-wmgm-9rr8"},{"name":"https://w4ke.info/2025/06/18/funky-chunks.html","tags":["x_refsource_MISC"],"url":"https://w4ke.info/2025/06/18/funky-chunks.html"},{"name":"https://w4ke.info/2025/10/29/funky-chunks-2.html","tags":["x_refsource_MISC"],"url":"https://w4ke.info/2025/10/29/funky-chunks-2.html"},{"name":"https://www.rfc-editor.org/rfc/rfc9110","tags":["x_refsource_MISC"],"url":"https://www.rfc-editor.org/rfc/rfc9110"}],"affected":[{"vendor":"netty","product":"netty","versions":[{"version":"< 4.1.132.Final","status":"affected"},{"version":">= 4.2.0.Alpha1, < 4.2.10.Final","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-03-27T19:54:15.586Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-pwqr-wmgm-9rr8","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-31T13:55:28.970197Z","id":"CVE-2026-33870","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-03-31T13:55:47.863Z"}}]}}