CVE-2026-28367

Estado: ModificadaCrítica (9.1)—

A flaw was found in Undertow. A remote attacker can exploit this vulnerability by sending `\r\r\r` as a header block terminator. This can be used for request smuggling with certain proxy servers, such as older versions of Apache Traffic Server and Google Cloud Classic Application Load Balancer, potentially leading to unauthorized access or manipulation of web requests.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Puntuación base: 9.1

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.89%
Percentil entre todas las CVEs puntuadas: 58
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.

ExplotaciónT1190 Exploit Public-Facing Applicationinitial access85 %
Impacto principalT1578 Modify Cloud Compute Infrastructuredefense impairment60 %
Impacto secundarioT1090.001 Internal Proxycommand and control75 %
Impacto secundarioT1565.002 Transmitted Data Manipulationimpact70 %

Explotación remota sin autenticación (AV:N/PR:N) mediante manipulación de protocolo HTTP en servidor web (CWE-444: HTTP smuggling). Permite bypass de seguridad y manipulación de tráfico.

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

Vulnerability Scanning User Account Management Privileged Account Management Network Segmentation Network Intrusion Prevention Limit Access to Resource Over Network

Tecnologías afectadas (9)

Redhat — Build OF Apache Camel - Hawtio Redhat — Build OF Apache Camel FOR Spring Boot Redhat — Data Grid Redhat — Fuse Redhat — Jboss Enterprise Application Platform Redhat — Jboss Enterprise Application Platform Expansion Pack Redhat — Process Automation Redhat — Single Sign-on Redhat — Undertow

CWE

CWE-444

Referencias

JSON original (NVD)

Mostrar

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