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
Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
See https://github.com/netty/netty/security/advisories/GHSA-hcvj-94mj-jp5c for fixed versions and remediation guidance.
References
History
Sat, 19 Sep 2026 00:15:00 +0000
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threat_severity
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threat_severity
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Fri, 18 Sep 2026 21:30:00 +0000
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| 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. | |
| Title | Io.netty/netty-codec-http: netty: incomplete validation of malformed transfer-encoding allows http request smuggling | |
| First Time appeared |
Redhat
Redhat amq Broker Redhat amq Clients Redhat apicurio Registry Redhat build Keycloak Redhat camel Quarkus Redhat camel Spring Boot Redhat debezium Redhat jboss Data Grid Redhat jboss Enterprise Application Platform Redhat jboss Fuse Redhat quarkus Redhat red Hat Single Sign On |
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| Weaknesses | CWE-1035 | |
| CPEs | cpe:/a:redhat:amq_broker:7 cpe:/a:redhat:amq_clients:2023 cpe:/a:redhat:apicurio_registry:3 cpe:/a:redhat:build_keycloak: cpe:/a:redhat:camel_quarkus:3 cpe:/a:redhat:camel_spring_boot:4 cpe:/a:redhat:debezium:3 cpe:/a:redhat:jboss_data_grid:8 cpe:/a:redhat:jboss_enterprise_application_platform:7 cpe:/a:redhat:jboss_enterprise_application_platform:8 cpe:/a:redhat:jboss_fuse:7 cpe:/a:redhat:quarkus:3 cpe:/a:redhat:red_hat_single_sign_on:7 |
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| Vendors & Products |
Redhat
Redhat amq Broker Redhat amq Clients Redhat apicurio Registry Redhat build Keycloak Redhat camel Quarkus Redhat camel Spring Boot Redhat debezium Redhat jboss Data Grid Redhat jboss Enterprise Application Platform Redhat jboss Fuse Redhat quarkus Redhat red Hat Single Sign On |
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cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-09-18T20:12:51.910Z
Reserved: 2026-09-18T09:51:35.203Z
Link: CVE-2026-93562
No data.
Status : Received
Published: 2026-09-18T21:18:46.977
Modified: 2026-09-18T21:18:46.977
Link: CVE-2026-93562
OpenCVE Enrichment
No data.
Weaknesses