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6.5 Medium

CVE-2026-93562 Io.netty/netty-codec-http: netty: incomplete validation of malformed transfer-encoding allows http request smuggling

Description

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 arbitrary HTTP requests, potentially bypassing security controls or accessing unauthorized resources.

CVSS 3.1 detail

Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Exploitable remotely over the network, without an account and without any user action; the impact on data or service is limited.

Attack vector
Network
Attack complexity
Low
Privileges required
None
Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

Affected products and versions

Product Affected versions Fixed in
Red Hat AMQ Broker 7 Versions not published
Red Hat AMQ Clients Versions not published
Red Hat build of Apache Camel 4 for Quarkus 3 Versions not published
Red Hat build of Apache Camel for Spring Boot 4 Versions not published
Red Hat build of Apicurio Registry 3 Versions not published
Red Hat build of Debezium 3 Versions not published
Red Hat Build of Keycloak Versions not published
Red Hat build of Quarkus Versions not published
Red Hat Data Grid 8 Versions not published
Show the 12 other branches
Product Affected versions Fixed in
Red Hat Fuse 7 Versions not published
Red Hat JBoss Enterprise Application Platform 7 Versions not published
Red Hat JBoss Enterprise Application Platform 8 Versions not published
Red Hat Single Sign-On 7 Versions not published
Red Hat build of Quarkus 3.27.5.SP2 Versions not published
Red Hat build of Quarkus 3.33.3.SP2 Versions not published
Red Hat Build of Debezium 3.6 Versions not published
Red Hat build of Keycloak 26.4 26.4 earliest → < 26.4-30 26.4-30
Red Hat build of Keycloak 26.6.8 Versions not published
Red Hat build of Keycloak 26.4.17 Versions not published
Red Hat build of Keycloak 26.6 26.6 earliest → < 26.6-24 26.6-24
Red Hat JBoss Enterprise Application Platform 8.1 Versions not published

Other CVEs of Red Hat AMQ Broker 7

The 88 CVEs of Red Hat AMQ Broker 7 →
CVE-2026-96453 Org.keycloak/keycloak-admin-cli: keycloak-admin-cli: kcadm custom truststore accepts arbitrary self-signed certificates 8.0 High CVE-2026-93998 Keycloak-core: keycloak-core: saml adapter does not bind signed assertions to the configured identity provider issuer 7.4 High CVE-2026-101292 Apache ActiveMQ Artemis before 2.34.0 contains an unsafe reflection vulnerability in… 8.2 High CVE-2026-93574 Io.netty/netty-codec-http: netty: http request smuggling via post-digit whitespace in chunk-size parsing 6.5 Medium
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