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CVE-2026-28369

Estado: ModificadaCrítica (9.1)—

A flaw was found in Undertow. When Undertow receives an HTTP request where the first header line starts with one or more spaces, it incorrectly processes the request by stripping these leading spaces. This behavior, which violates HTTP standards, can be exploited by a remote attacker to perform request smuggling. Request smuggling allows an attacker to bypass security mechanisms, access restricted information, or manipulate web caches, potentially leading to unauthorized actions or data exposure.

CVSS

Probabilidad de explotación (EPSS)

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.

HTTP request smuggling remoto sin autenticación (AV:N/PR:N/UI:N) mediante procesamiento incorrecto de cabeceras que viola estándares HTTP. Permite bypassing de controles de seguridad, acceso a información restringida y manipulación de cachés.

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

Restrict File and Directory PermissionsFilter Network TrafficVulnerability ScanningUser TrainingSSL/TLS InspectionPrivileged Account Management

Tecnologías afectadas (10)

Redhat — Build OF Apache Camel - HawtioRedhat — Build OF Apache Camel FOR Spring BootRedhat — Data GridRedhat — Enterprise LinuxRedhat — FuseRedhat — Jboss Enterprise Application PlatformRedhat — Jboss Enterprise Application Platform Expansion PackRedhat — Process AutomationRedhat — Single Sign-onRedhat — Undertow

CWE

Referencias

JSON original (NVD)

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