{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-42585", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-04-28T17:26:12.086Z", "datePublished": "2026-05-13T18:12:39.586Z", "dateUpdated": "2026-05-15T20:34:21.305Z"}, "containers": {"cna": {"title": "Netty: HTTP Request Smuggling due to malformed Transfer-Encoding", "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": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/netty/netty/security/advisories/GHSA-38f8-5428-x5cv", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/netty/netty/security/advisories/GHSA-38f8-5428-x5cv"}], "affected": [{"vendor": "netty", "product": "netty", "versions": [{"version": ">= 4.2.0.Alpha1, < 4.2.13.Final", "status": "affected"}, {"version": "< 4.1.133.Final", "status": "affected"}]}, {"vendor": "io.netty", "product": "netty-codec-http", "versions": [{"version": ">= 4.2.0.Alpha1, < 4.2.13.Final", "status": "affected"}, {"version": "< 4.1.133.Final", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-13T18:13:17.497Z"}, "descriptions": [{"lang": "en", "value": "Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty incorrectly parses malformed Transfer-Encoding, enabling request smuggling attacks. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final."}], "source": {"advisory": "GHSA-38f8-5428-x5cv", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/netty/netty/security/advisories/GHSA-38f8-5428-x5cv", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-15T20:33:59.288432Z", "id": "CVE-2026-42585", "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": "2026-05-15T20:34:21.305Z"}}]}}