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{"bugzilla": {"description": "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", "id": "2536961", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2536961"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "status": "draft"}, "cwe": "CWE-20", "details": ["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."], "mitigation": {"lang": "en:us", "value": "See https://github.com/netty/netty/security/advisories/GHSA-w6j8-x45j-w75f for fixed versions and remediation guidance."}, "name": "CVE-2026-93568", "package_state": [{"cpe": "cpe:/a:redhat:amq_broker:7", "fix_state": "Not affected", "package_name": "netty-codec-http2", "product_name": "Red Hat AMQ Broker 7"}, {"cpe": "cpe:/a:redhat:camel_quarkus:3", "fix_state": "Affected", "package_name": "netty-codec-http2", "product_name": "Red Hat build of Apache Camel 4 for Quarkus 3"}, {"cpe": "cpe:/a:redhat:camel_spring_boot:4", "fix_state": "Affected", "package_name": "netty-codec-http2", "product_name": "Red Hat build of Apache Camel for Spring Boot 4"}, {"cpe": "cpe:/a:redhat:apicurio_registry:3", "fix_state": "Affected", "package_name": "netty-codec-http2", "product_name": "Red Hat build of Apicurio Registry 3"}, {"cpe": "cpe:/a:redhat:debezium:3", "fix_state": "Affected", "package_name": "netty-codec-http2", "product_name": "Red Hat build of Debezium 3"}, {"cpe": "cpe:/a:redhat:build_keycloak:", "fix_state": "Affected", "package_name": "netty-codec-http2", "product_name": "Red Hat Build of Keycloak"}, {"cpe": "cpe:/a:redhat:quarkus:3", "fix_state": "Affected", "package_name": "netty-codec-http2", "product_name": "Red Hat build of Quarkus"}, {"cpe": "cpe:/a:redhat:jboss_data_grid:8", "fix_state": "Affected", "package_name": "netty-codec-http2", "product_name": "Red Hat Data Grid 8"}, {"cpe": "cpe:/a:redhat:jboss_fuse:7", "fix_state": "Fix deferred", "package_name": "netty-codec-http2", "product_name": "Red Hat Fuse 7"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:7", "fix_state": "Fix deferred", "package_name": "netty-codec-http2", "product_name": "Red Hat JBoss Enterprise Application Platform 7"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:8", "fix_state": "Affected", "package_name": "netty-codec-http2", "product_name": "Red Hat JBoss Enterprise Application Platform 8"}, {"cpe": "cpe:/a:redhat:red_hat_single_sign_on:7", "fix_state": "Fix deferred", "package_name": "netty-codec-http2", "product_name": "Red Hat Single Sign-On 7"}], "public_date": "2026-09-10T00:50:42Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-93568\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-93568"], "statement": "This is an Important flaw where Netty's HTTP/2 and HTTP/3 HTTP-object conversion paths incorrectly downgrade Extended CONNECT requests to standard HTTP/1.1 CONNECT requests. This can lead to authorization bypasses in Red Hat products acting as gateways, proxies, or application servers that utilize Netty's HTTP-object adapters, as critical protocol and path information is lost, preventing proper policy enforcement.", "threat_severity": "Important"}