CVE-2026-31892

Estado: ModificadaAlta (8.9)—

Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. From 2.9.0 to before 4.0.2 and 3.7.11, A user who can submit Workflows can completely bypass all security settings defined in a WorkflowTemplate by including a podSpecPatch field in their Workflow submission. This works even when the controller is configured with templateReferencing: Strict, which is specifically documented as a mechanism to restrict users to admin-approved templates. The podSpecPatch field on a submitted Workflow takes precedence over the referenced WorkflowTemplate during spec merging and is applied directly to the pod spec at creation time with no security validation. This vulnerability is fixed in 4.0.2 and 3.7.11.

CVSS

Versión: 4.0
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Puntuación base: 8.9

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.65%
Percentil entre todas las CVEs puntuadas: 49
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.

ExplotaciónT1210 Exploitation of Remote Serviceslateral movement75 %
Impacto principalT1078 Valid Accountsstealth · persistence · privilege escalation · initial access80 %
Impacto secundarioT1059 Command and Scripting Interpreterexecution70 %

AV:N/PR:L: atacante con acceso remoto autenticado explota validación insuficiente (CWE-863) en podSpecPatch para eludir restricciones de WorkflowTemplate y ejecutar comandos en pods Kubernetes.

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

Privileged Account Management Disable or Remove Feature or Program Application Developer Guidance Active Directory Configuration Vulnerability Scanning User Training

Tecnologías afectadas (1)

Argoproj — Argo Workflows

CWE

CWE-863
CWE-807

Referencias

JSON original (NVD)

Mostrar

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      "value": "Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. From 2.9.0 to before 4.0.2 and 3.7.11, A user who can submit Workflows can completely bypass all security settings defined in a WorkflowTemplate by including a podSpecPatch field in their Workflow submission. This works even when the controller is configured with templateReferencing: Strict, which is specifically documented as a mechanism to restrict users to admin-approved templates. The podSpecPatch field on a submitted Workflow takes precedence over the referenced WorkflowTemplate during spec merging and is applied directly to the pod spec at creation time with no security validation. This vulnerability is fixed in 4.0.2 and 3.7.11."
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      "value": "Argo Workflows es un motor de flujo de trabajo de código abierto nativo de contenedores para orquestar trabajos paralelos en Kubernetes. Desde la versión 2.9.0 hasta antes de la 4.0.2 y la 3.7.11, un usuario que puede enviar Workflows puede eludir completamente todas las configuraciones de seguridad definidas en un WorkflowTemplate al incluir un campo podSpecPatch en su envío de Workflow. Esto funciona incluso cuando el controlador está configurado con templateReferencing: Strict, que está específicamente documentado como un mecanismo para restringir a los usuarios a plantillas aprobadas por el administrador. El campo podSpecPatch en un Workflow enviado tiene precedencia sobre el WorkflowTemplate referenciado durante la fusión de especificaciones y se aplica directamente a la especificación del pod en el momento de la creación sin validación de seguridad. Esta vulnerabilidad está corregida en las versiones 4.0.2 y 3.7.11."
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  "lastModified": "2026-07-15T02:19:51.447",
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