CVE-2026-93562 PUBLISHED

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

Assigner: redhat
Reserved: 18.09.2026 Published: 18.09.2026 Updated: 18.09.2026

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.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS Score: 6.5

Product Status

Vendor Red Hat
Product Red Hat AMQ Broker 7
Versions Default: affected
Vendor Red Hat
Product Red Hat AMQ Clients
Versions Default: affected
Vendor Red Hat
Product Red Hat build of Apache Camel 4 for Quarkus 3
Versions Default: affected
Vendor Red Hat
Product Red Hat build of Apache Camel for Spring Boot 4
Versions Default: affected
Vendor Red Hat
Product Red Hat build of Apicurio Registry 3
Versions Default: affected
Vendor Red Hat
Product Red Hat build of Debezium 3
Versions Default: affected
Vendor Red Hat
Product Red Hat Build of Keycloak
Versions Default: affected
Vendor Red Hat
Product Red Hat build of Quarkus
Versions Default: affected
Vendor Red Hat
Product Red Hat Data Grid 8
Versions Default: affected
Vendor Red Hat
Product Red Hat Fuse 7
Versions Default: unknown
Vendor Red Hat
Product Red Hat JBoss Enterprise Application Platform 7
Versions Default: unknown
Vendor Red Hat
Product Red Hat JBoss Enterprise Application Platform 8
Versions Default: affected
Vendor Red Hat
Product Red Hat Single Sign-On 7
Versions Default: unknown

Workarounds

See https://github.com/netty/netty/security/advisories/GHSA-hcvj-94mj-jp5c for fixed versions and remediation guidance.

References

Problem Types

  • CWE-1035 CWE