CVE-2026-44393

Estado: Pendiente de análisisAlta (7.4)—

An issue was discovered in OpenStack oslo.messaging 1.0.0 through 17.3.0. The oslo.messaging RabbitMQ driver does not perform TLS hostname verification when connecting to the message broker. When ssl_ca_file is configured, the driver enables certificate chain validation but does not pass the expected broker hostname into the underlying TLS stack. Any certificate signed by the deployment CA is accepted regardless of hostname, allowing an attacker who can intercept control-plane traffic to impersonate the RabbitMQ broker and perform a man-in-the-middle attack on RPC and notification traffic. All OpenStack services using oslo.messaging with RabbitMQ over TLS are affected.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Puntuación base: 7.4

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.28%
Percentil entre todas las CVEs puntuadas: 19
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.

ExplotaciónT1557 Adversary-in-the-Middlecredential access · collection85 %
Impacto secundarioT1041 Exfiltration Over C2 Channelexfiltration70 %

CWE-297 (falta de verificación de hostname TLS) permite MITM interceptando tráfico control-plane sin certificados válidos. Acceso red (AV:N) sin privilegios (PR:N) se aprovecha mediante posicionamiento en la ruta de tráfico; impacto confidencialidad e integridad (C:H/I:H) en RPC y notificaciones de

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

Network Intrusion Prevention User Training Network Segmentation Limit Access to Resource Over Network Filter Network Traffic Encrypt Sensitive Information

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Openstack — Oslo.messaging^AI

CWE

CWE-297
CWE-295

Referencias

JSON original (NVD)

Mostrar

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      "value": "An issue was discovered in OpenStack oslo.messaging 1.0.0 through 17.3.0. The oslo.messaging RabbitMQ driver does not perform TLS hostname verification when connecting to the message broker. When ssl_ca_file is configured, the driver enables certificate chain validation but does not pass the expected broker hostname into the underlying TLS stack. Any certificate signed by the deployment CA is accepted regardless of hostname, allowing an attacker who can intercept control-plane traffic to impersonate the RabbitMQ broker and perform a man-in-the-middle attack on RPC and notification traffic. All OpenStack services using oslo.messaging with RabbitMQ over TLS are affected."
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      "value": "Se descubrió un problema en OpenStack oslo.messaging desde la versión 1.0.0 hasta la 17.3.0. El controlador de RabbitMQ de oslo.messaging no realiza la verificación del nombre de host TLS al conectarse al broker de mensajes. Cuando se configura ssl_ca_file, el controlador habilita la validación de la cadena de certificados, pero no pasa el nombre de host esperado del broker a la pila TLS subyacente. Cualquier certificado firmado por la CA de despliegue es aceptado independientemente del nombre de host, permitiendo a un atacante que puede interceptar el tráfico del plano de control suplantar al broker de RabbitMQ y realizar un ataque man-in-the-middle en el tráfico RPC y de notificaciones. Todos los servicios de OpenStack que utilizan oslo.messaging con RabbitMQ sobre TLS se ven afectados."
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  "lastModified": "2026-08-27T13:18:04.500",
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}