{"id":"CVE-2026-93562","title":"A flaw was found in Netty's HTTP/1 decoder","summary":"A flaw was found in Netty's HTTP/1 decoder. Incomplete validation of malformed Transfer-Encoding headers allows a remote attacker to perform HTTP request smuggling. By sending specially crafted HTTP requests, an attacker can inject arbit…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","cwe":["CWE-1035"],"vendor":"Red Hat","product":"netty-codec-http","affected":["netty-codec-http","netty-codec-http","netty-codec-http","netty-codec-http (all versions)","netty-codec-http (all versions)","netty-codec-http (all versions)","netty-codec-http (all versions)","netty-codec-http (all versions)","netty-codec-http (all versions)","netty-codec-http (all versions)","netty-codec-http","netty-codec-http","netty-codec-http (all versions)","netty-codec-http"],"patched":["build_of_quarkus 3.27.5.SP2","build_of_quarkus 3.33.3.SP2"],"published":"2026-09-18","updated":"2026-10-15","sourceUpdated":"2026-10-15T17:17:30.650","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93562","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:69440","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:69470","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:83612","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-93562","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536951","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536951","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93562.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93562"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93562"}],"tags":["nvd","cve.org","exploit-available","csaf","vex","red-hat"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-22T16:17:26.080353Z"},"epss":0.0041,"epssPercentile":0.35038,"ingestedAt":"2026-09-18T20:51:25.799Z","slug":"CVE-2026-93562","body":"## Overview\n\nA flaw was found in Netty's HTTP/1 decoder. Incomplete validation of malformed Transfer-Encoding headers allows a remote attacker to perform HTTP request smuggling. By sending specially crafted HTTP requests, an attacker can inject arbitrary HTTP requests, potentially bypassing security controls or accessing unauthorized resources.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat AMQ Broker 7, Red Hat AMQ Clients, Red Hat build of Apache Camel 4 for Quarkus 3, Red Hat build of Apache Camel for Spring Boot 4, Red Hat build of Apicurio Registry 3, Red Hat build of Debezium 3, … · no fix planned: Red Hat Fuse 7, Red Hat JBoss Enterprise Application Platform 7, Red Hat Single Sign-On 7, Red Hat AMQ Broker 7, … · updated 2026-10-09 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93562.json)\n- **RHSA-2026:69470** · Red Hat · fixed in: Red Hat build of Quarkus 3.27.5.SP2 · released 2026-09-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:69470)\n- **RHSA-2026:69440** · Red Hat · fixed in: Red Hat build of Quarkus 3.33.3.SP2 · released 2026-09-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:69440)","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":209217,"id":"CVE-2026-93562","ts":1790096883959,"field":"exploit_available","old":"false","new":"true"}]}