CVE-2026-93574: medium-severity vulnerability in Red Hat AMQ Broker 7
Io.netty/netty-codec-http: netty: http request smuggling via post-digit whitespace in chunk-size parsing
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 1.4%
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 chunk size can lead to HTTP request smuggling. This allows an attacker to bypass security controls or access unauthorized resources in proxy/backend deployments.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Affected products
Red Hat · Red Hat AMQ Broker 7Red Hat · Red Hat AMQ ClientsRed Hat · Red Hat build of Apache Camel 4 for Quarkus 3Red Hat · Red Hat build of Apache Camel for Spring Boot 4Red Hat · Red Hat build of Apicurio Registry 3Red Hat · Red Hat Build of Debezium 3.6Red Hat · Red Hat build of Keycloak 26.4Red Hat · Red Hat build of Keycloak 26.4.17Red Hat · Red Hat build of Keycloak 26.6Red Hat · Red Hat build of Keycloak 26.6.8Red Hat · Red Hat build of Quarkus 3.27.5.SP2Red Hat · Red Hat build of Quarkus 3.33.3.SP2Red Hat · Red Hat Data Grid 8Red Hat · Red Hat Fuse 7Red Hat · Red Hat JBoss Enterprise Application Platform 7Red Hat · Red Hat JBoss Enterprise Application Platform 8.1Red Hat · Red Hat Single Sign-On 7Related CVEs — Red Hat AMQ Broker 7
In the same product, most dangerous first.
CVE-2024-1635HIGHUndertow: out-of-memory error after several closed connections with wildfly-http-client protocolEPSS 4.6%CVE-2026-93567HIGHIo.netty/netty-codec-http2: http/1 authority-form connect is translated to malformed http/2 connect with host-controlled :authorityEPSS 2.6%CVE-2026-93569HIGHIo.netty/netty-codec-http2: http/1 absolute-form host mismatch is translated to http/2 :authority, overriding the request-target authorityEPSS 2.2%CVE-2024-3653MEDIUMUndertow: learningpushhandler can lead to remote memory dos attacksEPSS 1.9%CVE-2024-1023MEDIUMIo.vertx/vertx-core: memory leak due to the use of netty fastthreadlocal data structures in vertxEPSS 1.7%CVE-2024-1132HIGHKeycloak: path transversal in redirection validationEPSS 1.6%
References
https://access.redhat.com/errata/RHSA-2026:69440https://access.redhat.com/errata/RHSA-2026:69470https://access.redhat.com/errata/RHSA-2026:83612https://access.redhat.com/errata/RHSA-2026:95759https://access.redhat.com/errata/RHSA-2026:95760https://access.redhat.com/errata/RHSA-2026:95761https://access.redhat.com/errata/RHSA-2026:95762https://access.redhat.com/errata/RHSA-2026:95887https://access.redhat.com/security/cve/CVE-2026-93574https://bugzilla.redhat.com/show_bug.cgi?id=2536966