{"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 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-2026-93569","cwes":["CWE-444"],"description":"A flaw was found in Netty. A remote unauthenticated attacker can exploit a vulnerability in Netty's HTTP/1 to HTTP/2 conversion process. When an HTTP/1 request includes both an absolute-form request-target and a conflicting Host header, Netty incorrectly prioritizes the Host header for the HTTP/2 :authority field, discarding the original request-target authority. This inconsistency can allow an attacker to bypass security controls in Netty-based proxies or gateways, potentially leading to unauthorized access, cache poisoning, or misrouting of requests.","epss":{"date":"2026-11-02","percentile":0.82449,"score":0.02192},"exploits":[],"kev":null,"metrics":[{"score":8.2,"severity":"high","source":"CNA: redhat","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N","version":"3.1"}],"modifiedAt":1793634373322,"publishedAt":1789741674015,"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":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-93569"},{"source":"CNA: redhat","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536962"}],"remediation":[{"kind":"workaround","source":"CNA: redhat","text":"See https://github.com/netty/netty/security/advisories/GHSA-cg2g-fxr4-mg8m for fixed versions and remediation guidance."}],"revision":"081ec09d99c5f59013506253720a74a8e5e6278887e6724fb496c83045ebea95","sources":[{"modifiedAt":1793634373322,"name":"CNA: redhat","retrievedAt":1793635793692,"url":"https://www.cve.org/CVERecord?id=CVE-2026-93569"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793635805064,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-93569"}],"ssvc":{"assessedAt":1790087805463,"automatable":"yes","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Io.netty/netty-codec-http2: http/1 absolute-form host mismatch is translated to http/2 :authority, overriding the request-target authority","updatedAt":1793635805064}