CVE-2026-25705

A vulnerability has been identified in [Rancher's Extensions](https://ranchermanager.docs.rancher.com/integrations-in-rancher/rancher-extensions) where malicious code can be injected in Rancher through a path traversal in the `compressedEndpoint` field inside a `UIPlugin` deployment. A malicious UI extension could abuse that to: * Overwrite Rancher binaries or configuration to inject code. * Write to /var/lib/rancher/ to tamper with cluster state. * If hostPath volumes are mounted, write to the host node filesystem. * Use this issue to chain with other attack vectors.

CVSS v3 8.4 HIGH

8.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.7 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-25705
https://github.com/rancher/rancher/security/advisories/GHSA-5v3h-x4wf-5c35

Configurations

No configuration.

History

26 Oct 2026, 14:10

Type	Values Removed	Values Added
Summary		(es) Una vulnerabilidad ha sido identificada en las [extensiones de Rancher](https://ranchermanager.docs.rancher.com/integrations-in-rancher/rancher-extensions) donde se puede inyectar código malicioso en Rancher a través de un salto de ruta en el campo “compressedEndpoint” dentro de un despliegue de “UIPlugin”. Una extensión de UI maliciosa podría abusar de ello para: * Sobrescribir binarios o la configuración de Rancher para inyectar código. * Escribir en /var/lib/rancher/ para manipular el estado del clúster. * Si los volúmenes hostPath están montados, escribir en el sistema de archivos del nodo host. * Usar este problema para encadenar con otros vectores de ataque.

Information

Published : 2026-05-13 08:16

Updated : 2026-10-26 14:10

NVD link : CVE-2026-25705

Mitre link : CVE-2026-25705

CVE.ORG link : CVE-2026-25705

JSON object : View

Products Affected

No product.

CWE

CWE-35

Path Traversal: '.../...//'

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