{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-93566", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-09-18T10:00:52.431Z", "datePublished": "2026-09-18T14:19:29.741Z", "dateUpdated": "2026-10-15T17:01:19.077Z" }, "containers": { "cna": { "title": "Io.netty/netty-codec-http: netty: http request smuggling due to control characters in the chunk-size line", "metrics": [ { "other": { "content": { "value": "Moderate", "namespace": "https://access.redhat.com/security/updates/classification/" }, "type": "Red Hat severity rating" } }, { "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" }, "format": "CVSS" } ], "descriptions": [ { "lang": "en", "value": "A flaw was found in Netty. 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"https://access.redhat.com/errata/RHSA-2026:69440", "name": "RHSA-2026:69440", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/errata/RHSA-2026:69470", "name": "RHSA-2026:69470", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/errata/RHSA-2026:83612", "name": "RHSA-2026:83612", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/security/cve/CVE-2026-93566", "tags": [ "vdb-entry", "x_refsource_REDHAT" ] }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2536954", "name": "RHBZ#2536954", "tags": [ "issue-tracking", "x_refsource_REDHAT" ] } ], "datePublic": "2026-09-10T00:47:37.000Z", "problemTypes": [ { "descriptions": [ { "cweId": "CWE-1035", "description": "CWE-1035", "lang": "en", "type": "CWE" } ] } ], "x_redhatCweChain": "CWE-1035", "workarounds": [ { "lang": "en", "value": "See https://github.com/netty/netty/security/advisories/GHSA-rq4j-fc47-9698 for 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