{"id":"CVE-2026-93574","title":"A flaw was found in Netty's `netty-codec-http` component","summary":"A flaw was found in Netty's `netty-codec-http` component. A remote attacker could exploit this vulnerability by sending a specially crafted HTTP/1.1 chunk-size token that includes post-digit whitespace. This incorrect parsing of the chun…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","cwe":["CWE-444"],"vendor":"Red Hat","product":"netty-codec-http","affected":["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 (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"],"published":"2026-09-18","updated":"2026-09-21","sourceUpdated":"2026-09-21T19:17:17.127","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93574","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:69470","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-93574","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536966","label":"secalert@redhat.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93574.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93574"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93574"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00361,"epssPercentile":0.29816,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-21T18:18:47.806786Z"},"ingestedAt":"2026-09-18T20:51:25.799Z","slug":"CVE-2026-93574","body":"## Overview\n\nA flaw was found in Netty's `netty-codec-http` component. A remote attacker could exploit this vulnerability by sending a specially crafted HTTP/1.1 chunk-size token that includes post-digit whitespace. This incorrect parsing of the chunk size can lead to HTTP request smuggling. This allows an attacker to bypass security controls or access unauthorized resources in proxy/backend deployments.\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 build of Apicurio Registry 3, Red Hat Fuse 7, Red Hat JBoss Enterprise Application Platform 7, Red Hat Single Sign-On 7, … · updated 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93574.json)","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}