Red HatCVE-2026-93574
Red Hat Netty: request smuggling
Medium6.5CVE-2026-93574 · Published Sep 18, 2026 · updated Sep 24, 2026
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.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Red Hat AMQ Broker 7 Product | all versions | No fix yet |
| Red Hat AMQ Clients Product | all versions | No fix yet |
| Red Hat Build of Keycloak Product | all versions | No fix yet |
| Red Hat Data Grid 8 Product | all versions | No fix yet |
| Red Hat Fuse 7 Product | all versions | No fix yet |
| Red Hat JBoss Enterprise Application Platform 7 Product | all versions | No fix yet |
| Red Hat JBoss Enterprise Application Platform 8 Product | all versions | No fix yet |
| Red Hat Single Sign-On 7 Product | all versions | No fix yet |
| Red Hat build of Apache Camel 4 for Quarkus 3 Product | all versions | No fix yet |
| Red Hat build of Apache Camel for Spring Boot 4 Product | all versions | No fix yet |
| Red Hat build of Apicurio Registry 3 Product | all versions | No fix yet |
| Red Hat build of Debezium 3 Product | all versions | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-444
More Red Hat advisories
All Red Hat| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Sep 18 | Red Hat OpenShift Container Platform 4: server-side request forgery | Critical9.3 | No fix yet |
| Sep 18 | Red Hat Netty: request smuggling | Medium6.5 | No fix yet |
| Sep 18 | A flaw was found in cockpit-files | Medium6.1 | No fix yet |
| Sep 18 | Red Hat cockpit-files. This vulnerability: race condition | Medium6.0 | No fix yet |
| Sep 18 | Red Hat cockpit-files: race condition | Medium6.0 | No fix yet |
| Sep 18 | Red Hat libsmpp34: memory corruption | High7.5 | 1.14.5 |