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CVE-2026-93566

Io.netty/netty-codec-http: netty: http request smuggling due to control characters in the chunk-size line

CVSS 3.1 6.5 MEDIUMCheck source for fixed versionsKEV status unknown
Original advisory

cve-program · CVE-2026-93566

Published

A flaw was found in Netty. A remote attacker could exploit this by sending a specially crafted HTTP request that includes control characters within the chunk-size line. This bypasses the intended strict validation, allowing the attacker to inject arbitrary HTTP requests. This vulnerability can lead to HTTP request smuggling, potentially resulting in information disclosure or other unauthorized actions.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-93566

Published

netty-codec-http

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat Build of Debezium 3.6",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "defaultStatus": "unaffected",
                    "packageName": "netty-codec-http",
                    "cpes": [
                        "cpe:/a:redhat:debezium:3.6"
                    ]
                }

rhbk/keycloak-operator-bundle

https://catalog.redhat.com/software/containers/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Keycloak 26.4",
                    "collectionURL": "https://catalog.redhat.com/software/containers/",
                    "packageName": "rhbk/keycloak-operator-bundle",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "26.4.17-2",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:/a:redhat:build_keycloak:26.4::el9"
                    ]
                }

rhbk/keycloak-rhel9

https://catalog.redhat.com/software/containers/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Keycloak 26.4",
                    "collectionURL": "https://catalog.redhat.com/software/containers/",
                    "packageName": "rhbk/keycloak-rhel9",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "26.4-29",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:/a:redhat:build_keycloak:26.4::el9"
                    ]
                }

rhbk/keycloak-rhel9-operator

https://catalog.redhat.com/software/containers/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Keycloak 26.4",
                    "collectionURL": "https://catalog.redhat.com/software/containers/",
                    "packageName": "rhbk/keycloak-rhel9-operator",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "26.4-30",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:/a:redhat:build_keycloak:26.4::el9"
                    ]
                }

netty-codec-http

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Keycloak 26.4.17",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "defaultStatus": "unaffected",
                    "packageName": "netty-codec-http",
                    "cpes": [
                        "cpe:/a:redhat:build_keycloak:26.4::el9"
                    ]
                }

rhbk/keycloak-operator-bundle

https://catalog.redhat.com/software/containers/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Keycloak 26.6",
                    "collectionURL": "https://catalog.redhat.com/software/containers/",
                    "packageName": "rhbk/keycloak-operator-bundle",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "26.6.8-2",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:/a:redhat:build_keycloak:26.6::el9"
                    ]
                }

rhbk/keycloak-rhel9

https://catalog.redhat.com/software/containers/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Keycloak 26.6",
                    "collectionURL": "https://catalog.redhat.com/software/containers/",
                    "packageName": "rhbk/keycloak-rhel9",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "26.6-24",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:/a:redhat:build_keycloak:26.6::el9"
                    ]
                }

rhbk/keycloak-rhel9-operator

https://catalog.redhat.com/software/containers/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Keycloak 26.6",
                    "collectionURL": "https://catalog.redhat.com/software/containers/",
                    "packageName": "rhbk/keycloak-rhel9-operator",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "26.6-24",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:/a:redhat:build_keycloak:26.6::el9"
                    ]
                }

netty-codec-http

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Keycloak 26.6.8",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "defaultStatus": "unaffected",
                    "packageName": "netty-codec-http",
                    "cpes": [
                        "cpe:/a:redhat:build_keycloak:26.6::el9"
                    ]
                }

netty-codec-http

https://access.redhat.com/jbossnetwork/restricted/listSoftware.html

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Quarkus 3.27.5.SP2",
                    "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
                    "defaultStatus": "unaffected",
                    "packageName": "netty-codec-http",
                    "cpes": [
                        "cpe:/a:redhat:quarkus:3.27::el8"
                    ]
                }

netty-codec-http

https://access.redhat.com/jbossnetwork/restricted/listSoftware.html

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Quarkus 3.33.3.SP2",
                    "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
                    "defaultStatus": "unaffected",
                    "packageName": "netty-codec-http",
                    "cpes": [
                        "cpe:/a:redhat:quarkus:3.33::el8"
                    ]
                }

netty-codec-http

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat JBoss Enterprise Application Platform 8.1",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "defaultStatus": "unaffected",
                    "packageName": "netty-codec-http",
                    "cpes": [
                        "cpe:/a:redhat:jboss_enterprise_application_platform:8.1"
                    ]
                }

netty-codec-http

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat AMQ Broker 7",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "netty-codec-http",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/a:redhat:amq_broker:7"
                    ]
                }

netty-codec-http

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat AMQ Clients",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "netty-codec-http",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/a:redhat:amq_clients:2023"
                    ]
                }

netty-codec-http

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Apache Camel 4 for Quarkus 3",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "netty-codec-http",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/a:redhat:camel_quarkus:3"
                    ]
                }

netty-codec-http

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Apache Camel for Spring Boot 4",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "netty-codec-http",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/a:redhat:camel_spring_boot:4"
                    ]
                }

netty-codec-http

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Apicurio Registry 3",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "netty-codec-http",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/a:redhat:apicurio_registry:3"
                    ]
                }

netty-codec-http

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat Data Grid 8",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "netty-codec-http",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/a:redhat:jboss_data_grid:8"
                    ]
                }

netty-codec-http

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat Fuse 7",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "netty-codec-http",
                    "defaultStatus": "unknown",
                    "cpes": [
                        "cpe:/a:redhat:jboss_fuse:7"
                    ]
                }

netty-codec-http

https://access.redhat.com/jbossnetwork/restricted/listSoftware.html

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat JBoss Enterprise Application Platform 7",
                    "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
                    "packageName": "netty-codec-http",
                    "defaultStatus": "unknown",
                    "cpes": [
                        "cpe:/a:redhat:jboss_enterprise_application_platform:7"
                    ]
                }

netty-codec-http

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat Single Sign-On 7",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "netty-codec-http",
                    "defaultStatus": "unknown",
                    "cpes": [
                        "cpe:/a:redhat:red_hat_single_sign_on:7"
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

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