CVE-2026-93574
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.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
- Puntuación base: 6.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 1.35%
- Percentil entre todas las CVEs puntuadas: 71
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1190Exploit Public-Facing Applicationinitial access90 % - Impacto principal
T1574.001DLLstealth · execution75 % - Impacto secundario
T1021.001Remote Desktop Protocollateral movement60 %
Vulnerabilidad de análisis HTTP en servidor remoto (AV:N, PR:N) explotable sin interacción. HTTP request smuggling causa desvío de solicitudes en proxies/backends, permitiendo bypass de controles (I:L) y potencial acceso no autorizado (A:L).
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-444
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-93574",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-93574",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-09-21T18:18:47.806786Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "secalert@redhat.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 6.5,
"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
"integrityImpact": "LOW",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "LOW",
"privilegesRequired": "NONE",
"confidentialityImpact": "NONE"
},
"impactScore": 2.5,
"exploitabilityScore": 3.9
}
]
},
"affected": [
{
"source": "secalert@redhat.com",
"affectedData": [
{
"cpes": [
"cpe:/a:redhat:amq_broker:7"
],
"vendor": "Red Hat",
"product": "Red Hat AMQ Broker 7",
"packageName": "netty-codec-http",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:amq_clients:2023"
],
"vendor": "Red Hat",
"product": "Red Hat AMQ Clients",
"packageName": "netty-codec-http",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:camel_quarkus:3"
],
"vendor": "Red Hat",
"product": "Red Hat build of Apache Camel 4 for Quarkus 3",
"packageName": "netty-codec-http",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:camel_spring_boot:4"
],
"vendor": "Red Hat",
"product": "Red Hat build of Apache Camel for Spring Boot 4",
"packageName": "netty-codec-http",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:apicurio_registry:3"
],
"vendor": "Red Hat",
"product": "Red Hat build of Apicurio Registry 3",
"packageName": "netty-codec-http",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:debezium:3"
],
"vendor": "Red Hat",
"product": "Red Hat build of Debezium 3",
"packageName": "netty-codec-http",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:build_keycloak:"
],
"vendor": "Red Hat",
"product": "Red Hat Build of Keycloak",
"packageName": "netty-codec-http",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:jboss_data_grid:8"
],
"vendor": "Red Hat",
"product": "Red Hat Data Grid 8",
"packageName": "netty-codec-http",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:jboss_fuse:7"
],
"vendor": "Red Hat",
"product": "Red Hat Fuse 7",
"packageName": "netty-codec-http",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:/a:redhat:jboss_enterprise_application_platform:7"
],
"vendor": "Red Hat",
"product": "Red Hat JBoss Enterprise Application Platform 7",
"packageName": "netty-codec-http",
"collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:/a:redhat:jboss_enterprise_application_platform:8"
],
"vendor": "Red Hat",
"product": "Red Hat JBoss Enterprise Application Platform 8",
"packageName": "netty-codec-http",
"collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:red_hat_single_sign_on:7"
],
"vendor": "Red Hat",
"product": "Red Hat Single Sign-On 7",
"packageName": "netty-codec-http",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
}
]
}
],
"published": "2026-09-18T21:18:48.277",
"references": [
{
"url": "https://access.redhat.com/errata/RHSA-2026:69440",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:69470",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/security/cve/CVE-2026-93574",
"source": "secalert@redhat.com"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2536966",
"source": "secalert@redhat.com"
}
],
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"type": "Secondary",
"source": "secalert@redhat.com",
"description": [
{
"lang": "en",
"value": "CWE-444"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"lastModified": "2026-09-24T11:17:01.730",
"sourceIdentifier": "secalert@redhat.com"
}