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.
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Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
See https://github.com/netty/netty/security/advisories/GHSA-j4mg-hqgv-34qc 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
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Io.netty/netty-codec-http: netty: http request smuggling via post-digit whitespace in chunk-size parsing | |
| 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-444 | |
| 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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Redhat
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cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-09-18T20:12:43.146Z
Reserved: 2026-09-18T10:31:41.514Z
Link: CVE-2026-93574
No data.
Status : Received
Published: 2026-09-18T21:18:48.277
Modified: 2026-09-18T21:18:48.277
Link: CVE-2026-93574
OpenCVE Enrichment
No data.
Weaknesses