{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-93568", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-09-18T10:03:17.897Z", "datePublished": "2026-09-18T14:34:04.546Z", "dateUpdated": "2026-10-09T23:01:12.795Z" }, "containers": { "cna": { "title": "Io.netty/netty-codec-http2: io.netty/netty-codec-http3: netty: http/2 and http/3 extended connect requests are downgraded as regular connect requests", "metrics": [ { "other": { "content": { "value": "Important", "namespace": "https://access.redhat.com/security/updates/classification/" }, "type": "Red Hat severity rating" } }, { "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" }, "format": "CVSS" } ], "descriptions": [ { "lang": "en", "value": "A flaw was found in Netty. A remote attacker could exploit this vulnerability by sending specially crafted HTTP/2 or HTTP/3 Extended CONNECT requests. Netty's HTTP-object conversion path incorrectly processes these requests as regular HTTP/1.1 CONNECT requests, leading to a loss of critical protocol and path information. This misinterpretation can allow attackers to bypass security policies, such as routing or authorization logic, in applications that rely on Netty for HTTP/2 or HTTP/3 communication, resulting in integrity loss." } ], "affected": [ { "vendor": "Red Hat", "product": "Red Hat Build of Apache Camel 3.33.3.SP2", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "io.netty/netty-codec-http2", "defaultStatus": "affected", "versions": [ { "version": "4.1.138.Final-redhat-00001", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:apache_camel_quarkus:3.33" ] }, { "vendor": "Red Hat", "product": "Red Hat build of Quarkus 3.27.5.SP2", "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html", "defaultStatus": "unaffected", "packageName": "netty-codec-http2", "cpes": [ "cpe:/a:redhat:quarkus:3.27::el8" ] }, { "vendor": "Red Hat", "product": "Red Hat build of Quarkus 3.33.3.SP2", "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html", "defaultStatus": "unaffected", "packageName": "netty-codec-http2", "cpes": [ "cpe:/a:redhat:quarkus:3.33::el8" ] }, { "vendor": "Red Hat", "product": "Red Hat AMQ Broker 7", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "netty-codec-http2", "defaultStatus": "unaffected", "cpes": [ "cpe:/a:redhat:amq_broker:7" ] }, { "vendor": "Red Hat", "product": "Red Hat build of Apache Camel 4 for Quarkus 3", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "netty-codec-http2", "defaultStatus": "affected", "cpes": [ "cpe:/a:redhat:camel_quarkus:3" ] }, { "vendor": "Red Hat", "product": "Red Hat build of Apache Camel for Spring Boot 4", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "netty-codec-http2", "defaultStatus": "affected", "cpes": [ "cpe:/a:redhat:camel_spring_boot:4" ] }, { "vendor": "Red Hat", "product": "Red Hat build of Apicurio Registry 3", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "netty-codec-http2", "defaultStatus": "affected", "cpes": [ "cpe:/a:redhat:apicurio_registry:3" ] }, { "vendor": "Red Hat", "product": "Red Hat build of Debezium 3", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "netty-codec-http2", "defaultStatus": "affected", "cpes": [ "cpe:/a:redhat:debezium:3" ] }, { "vendor": "Red Hat", "product": "Red Hat Build of Keycloak", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "netty-codec-http2", "defaultStatus": "affected", "cpes": [ "cpe:/a:redhat:build_keycloak:" ] }, { "vendor": "Red Hat", "product": "Red Hat Data Grid 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "netty-codec-http2", 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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "netty-codec-http2", "defaultStatus": "affected", "cpes": [ "cpe:/a:redhat:red_hat_single_sign_on:7" ] } ], "references": [ { "url": "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-2026:70257", "name": "RHSA-2026:70257", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/security/cve/CVE-2026-93568", "tags": [ "vdb-entry", "x_refsource_REDHAT" ] }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2536961", "name": "RHBZ#2536961", "tags": [ "issue-tracking", "x_refsource_REDHAT" ] } ], "datePublic": "2026-09-10T00:50:42.000Z", "problemTypes": [ { "descriptions": [ { "cweId": 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