{"api_version":"1","generated_at":"2026-09-23T14:59:57+00:00","cve":"CVE-2026-93573","urls":{"html":"https://cve.report/CVE-2026-93573","api":"https://cve.report/api/cve/CVE-2026-93573.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-93573","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-93573"},"summary":{"title":"Io.netty/netty-codec-http: netty split transfer-encoding fields bypass final-chunked validation and enable request smuggling","description":"A flaw was found in Netty's HTTP/1.1 decoder. This vulnerability allows a remote attacker to bypass `Transfer-Encoding` header validation by splitting the `Transfer-Encoding` field across multiple headers, with the last field containing a non-final transfer coding like `gzip` or `deflate`. This bypass can lead to HTTP request smuggling, enabling attackers to bypass security controls, desynchronize request processing, or cause requests to be processed in an unintended context.","state":"PUBLISHED","assigner":"redhat","published_at":"2026-09-18 15:17:21","updated_at":"2026-09-22 23:17:08"},"problem_types":["CWE-444","CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')"],"metrics":[{"version":"3.1","source":"secalert@redhat.com","type":"Secondary","score":"6.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"}},{"version":"3.1","source":"CNA","type":"CVSS","score":"6.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","data":{"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"}}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:69470","name":"https://access.redhat.com/errata/RHSA-2026:69470","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://access.redhat.com/security/cve/CVE-2026-93573","name":"https://access.redhat.com/security/cve/CVE-2026-93573","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536964","name":"https://bugzilla.redhat.com/show_bug.cgi?id=2536964","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://access.redhat.com/errata/RHSA-2026:69440","name":"https://access.redhat.com/errata/RHSA-2026:69440","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93573","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93573","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Red Hat","product":"Red Hat AMQ Broker 7","version":"","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat AMQ Clients","version":"","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat build of Apache Camel 4 for Quarkus 3","version":"","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat build of Apache Camel for Spring Boot 4","version":"","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat build of Apicurio Registry 3","version":"","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat build of Debezium 3","version":"","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat Build of Keycloak","version":"","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat Data Grid 8","version":"","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat Fuse 7","version":"","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat JBoss Enterprise Application Platform 7","version":"","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat JBoss Enterprise Application Platform 8","version":"","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat Single Sign-On 7","version":"","platforms":[]}],"timeline":[{"source":"CNA","time":"2026-09-10T00:52:26.000Z","lang":"en","value":"Reported to Red Hat."},{"source":"CNA","time":"2026-09-10T00:52:26.000Z","lang":"en","value":"Made public."}],"solutions":[],"workarounds":[{"source":"CNA","title":"","value":"See https://github.com/netty/netty/security/advisories/GHSA-3jrc-fchc-59pw for fixed versions and remediation guidance.","time":"","lang":"en"}],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"93573","cve":"CVE-2026-93573","epss":"0.003370000","percentile":"0.272100000","score_date":"2026-09-22","updated_at":"2026-09-23 00:06:32"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-93573","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-09-18T16:19:54.114434Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-09-18T16:20:09.086Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:amq_broker:7"],"defaultStatus":"affected","packageName":"netty-codec-http","product":"Red Hat AMQ Broker 7","vendor":"Red Hat"},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:amq_clients:2023"],"defaultStatus":"affected","packageName":"netty-codec-http","product":"Red Hat AMQ Clients","vendor":"Red Hat"},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:camel_quarkus:3"],"defaultStatus":"affected","packageName":"netty-codec-http","product":"Red Hat build of Apache Camel 4 for Quarkus 3","vendor":"Red Hat"},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:camel_spring_boot:4"],"defaultStatus":"affected","packageName":"netty-codec-http","product":"Red Hat build of Apache Camel for Spring Boot 4","vendor":"Red Hat"},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:apicurio_registry:3"],"defaultStatus":"unknown","packageName":"netty-codec-http","product":"Red Hat build of Apicurio Registry 3","vendor":"Red Hat"},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:debezium:3"],"defaultStatus":"affected","packageName":"netty-codec-http","product":"Red Hat build of Debezium 3","vendor":"Red Hat"},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:build_keycloak:"],"defaultStatus":"unknown","packageName":"netty-codec-http","product":"Red Hat Build of Keycloak","vendor":"Red Hat"},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jboss_data_grid:8"],"defaultStatus":"unknown","packageName":"netty-codec-http","product":"Red Hat Data Grid 8","vendor":"Red Hat"},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jboss_fuse:7"],"defaultStatus":"unknown","packageName":"netty-codec-http","product":"Red Hat Fuse 7","vendor":"Red Hat"},{"collectionURL":"https://access.redhat.com/jbossnetwork/restricted/listSoftware.html","cpes":["cpe:/a:redhat:jboss_enterprise_application_platform:7"],"defaultStatus":"unknown","packageName":"netty-codec-http","product":"Red Hat JBoss Enterprise Application Platform 7","vendor":"Red Hat"},{"collectionURL":"https://access.redhat.com/jbossnetwork/restricted/listSoftware.html","cpes":["cpe:/a:redhat:jboss_enterprise_application_platform:8"],"defaultStatus":"affected","packageName":"netty-codec-http","product":"Red Hat JBoss Enterprise Application Platform 8","vendor":"Red Hat"},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:red_hat_single_sign_on:7"],"defaultStatus":"unknown","packageName":"netty-codec-http","product":"Red Hat Single Sign-On 7","vendor":"Red Hat"}],"datePublic":"2026-09-10T00:52:26.000Z","descriptions":[{"lang":"en","value":"A flaw was found in Netty's HTTP/1.1 decoder. This vulnerability allows a remote attacker to bypass `Transfer-Encoding` header validation by splitting the `Transfer-Encoding` field across multiple headers, with the last field containing a non-final transfer coding like `gzip` or `deflate`. This bypass can lead to HTTP request smuggling, enabling attackers to bypass security controls, desynchronize request processing, or cause requests to be processed in an unintended context."}],"metrics":[{"other":{"content":{"namespace":"https://access.redhat.com/security/updates/classification/","value":"Moderate"},"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"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-444","description":"Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-09-22T22:26:40.061Z","orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","shortName":"redhat"},"references":[{"name":"RHSA-2026:69440","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:69440"},{"name":"RHSA-2026:69470","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:69470"},{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-93573"},{"name":"RHBZ#2536964","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536964"}],"timeline":[{"lang":"en","time":"2026-09-10T00:52:26.000Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-09-10T00:52:26.000Z","value":"Made public."}],"title":"Io.netty/netty-codec-http: netty split transfer-encoding fields bypass final-chunked validation and enable request smuggling","workarounds":[{"lang":"en","value":"See https://github.com/netty/netty/security/advisories/GHSA-3jrc-fchc-59pw for fixed versions and remediation guidance."}],"x_generator":{"engine":"cvelib 1.8.0"},"x_redhatCweChain":"CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')"}},"cveMetadata":{"assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","assignerShortName":"redhat","cveId":"CVE-2026-93573","datePublished":"2026-09-18T14:44:00.077Z","dateReserved":"2026-09-18T10:30:24.299Z","dateUpdated":"2026-09-22T22:26:40.061Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-18 15:17:21","lastModifiedDate":"2026-09-22 23:17:08","problem_types":["CWE-444","CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')"],"metrics":{"cvssMetricV31":[{"source":"secalert@redhat.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":2.5}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-09-18T16:19:54.114434Z","id":"CVE-2026-93573","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"93573","Ordinal":"1","Title":"Io.netty/netty-codec-http: netty split transfer-encoding fields ","CVE":"CVE-2026-93573","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"93573","Ordinal":"1","NoteData":"A flaw was found in Netty's HTTP/1.1 decoder. This vulnerability allows a remote attacker to bypass `Transfer-Encoding` header validation by splitting the `Transfer-Encoding` field across multiple headers, with the last field containing a non-final transfer coding like `gzip` or `deflate`. This bypass can lead to HTTP request smuggling, enabling attackers to bypass security controls, desynchronize request processing, or cause requests to be processed in an unintended context.","Type":"Description","Title":"Io.netty/netty-codec-http: netty split transfer-encoding fields "}]}}}