{"affected":[{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"io.netty/netty-codec-http2","product":"Red Hat Build of Apache Camel 3.33.3.SP2","source":"CNA: redhat","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"4.1.138.Final-redhat-00001","versionType":"rpm"}]},{"defaultStatus":"unaffected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"netty-codec-http2","product":"Red Hat Build of Debezium 3.6","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"unaffected","ecosystem":"https://access.redhat.com/jbossnetwork/restricted/listSoftware.html","packageName":"netty-codec-http2","product":"Red Hat build of Quarkus 3.27.5.SP2","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"unaffected","ecosystem":"https://access.redhat.com/jbossnetwork/restricted/listSoftware.html","packageName":"netty-codec-http2","product":"Red Hat build of Quarkus 3.33.3.SP2","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"unaffected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"netty-codec-http2","product":"Red Hat JBoss Enterprise Application Platform 8.1","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"unaffected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"netty-codec-http2","product":"Red Hat AMQ Broker 7","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"netty-codec-http2","product":"Red Hat build of Apache Camel 4 for Quarkus 3","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"netty-codec-http2","product":"Red Hat build of Apache Camel for Spring Boot 4","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"netty-codec-http2","product":"Red Hat build of Apicurio Registry 3","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"netty-codec-http2","product":"Red Hat Build of Keycloak","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"netty-codec-http2","product":"Red Hat Data Grid 8","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"netty-codec-http2","product":"Red Hat Fuse 7","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/jbossnetwork/restricted/listSoftware.html","packageName":"netty-codec-http2","product":"Red Hat JBoss Enterprise Application Platform 7","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"unaffected","ecosystem":"https://access.redhat.com/jbossnetwork/restricted/listSoftware.html","packageName":"netty-codec-http2","product":"Red Hat JBoss Enterprise Application Platform 8","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/jbossnetwork/restricted/listSoftware.html","packageName":"netty-codec-http2","product":"Red Hat JBoss Enterprise Application Platform Expansion Pack","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"netty-codec-http2","product":"Red Hat Single Sign-On 7","source":"CNA: redhat","vendor":"Red Hat","versions":[]}],"cveId":"CVE-2026-93567","cwes":["CWE-20"],"description":"A flaw was found in Netty's HTTP/2 codec. When converting HTTP/1 CONNECT requests to HTTP/2, the component incorrectly uses the Host header instead of the CONNECT authority-form request-target for the tunnel authority. A remote attacker can exploit this by supplying a different Host header, leading to a malformed HTTP/2 CONNECT request. This can bypass security controls such as tunnel allow-lists or egress policies, resulting in integrity loss.","epss":{"date":"2026-11-04","percentile":0.85132,"score":0.02559},"exploits":[],"kev":null,"metrics":[{"score":7.5,"severity":"high","source":"CNA: redhat","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"}],"modifiedAt":1793803576276,"publishedAt":1789741407219,"references":[{"source":"CNA: redhat","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:69440"},{"source":"CNA: redhat","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:69470"},{"source":"CNA: redhat","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:70257"},{"source":"CNA: redhat","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:83612"},{"source":"CNA: redhat","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:95221"},{"source":"CNA: redhat","tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-93567"},{"source":"CNA: redhat","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536955"}],"remediation":[{"kind":"workaround","source":"CNA: redhat","text":"See https://github.com/netty/netty/security/advisories/GHSA-45h4-vhwh-fmhg for fixed versions and remediation guidance."}],"revision":"1052fe4d947663cee5dfb347d5f8075e37ff71c0788e15933c5d756bc163759c","sources":[{"modifiedAt":1793803576276,"name":"CNA: redhat","retrievedAt":1793805103949,"url":"https://www.cve.org/CVERecord?id=CVE-2026-93567"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793805117486,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-93567"}],"ssvc":{"assessedAt":1790020116822,"automatable":"yes","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Io.netty/netty-codec-http2: http/1 authority-form connect is translated to malformed http/2 connect with host-controlled :authority","updatedAt":1793805117486}