CVE-2026-1531

flaw · flaw Multiple Products

A high-severity vulnerability has been identified in the foreman_kubevirt plugin, affecting multiple products from the vendor "flaw".

Executive summary

A high-severity vulnerability has been identified in the foreman_kubevirt plugin, affecting multiple products from the vendor "flaw". This flaw could allow a remote attacker to compromise the virtualization management platform, potentially leading to unauthorized access, modification, or disruption of virtualized infrastructure. Organizations are urged to apply vendor patches immediately to mitigate the significant risk of system compromise.

Vulnerability

The vulnerability exists within the foreman_kubevirt plugin, which integrates Foreman with Kubevirt for managing virtual machines on a Kubernetes cluster. The flaw likely stems from improper input validation in the API endpoints responsible for creating or managing Kubevirt compute resources. A remote attacker with authenticated, but potentially low-privileged, access to the Foreman interface could send a specially crafted API request to execute arbitrary commands on the underlying Foreman server or within the context of the Kubernetes cluster, leading to a full compromise of the managed environment.

Business impact

This vulnerability is rated as High severity with a CVSS score of 8.1. Successful exploitation could result in a significant breach of the organization's virtualization infrastructure. An attacker could gain control over the Foreman instance, allowing them to create, delete, or modify virtual machines, access sensitive data stored on these systems, and disrupt critical business operations. The compromised system could also be used as a pivot point to launch further attacks against the internal network, posing a high risk to data confidentiality, integrity, and availability.

Remediation

Immediate Action: The primary remediation is to apply the security updates provided by the vendor across all affected systems immediately. Prioritize patching for internet-facing or critical infrastructure management servers. Following patching, review access and audit logs for any signs of compromise that may have occurred prior to remediation.

Proactive Monitoring: Implement enhanced monitoring on Foreman application and web server logs. Look for unusual or malformed API requests targeting foreman_kubevirt endpoints. Monitor for unexpected processes spawning from the Foreman application user on the host system and for anomalous network connections originating from the Foreman server to the Kubernetes cluster.

Compensating Controls: If immediate patching is not feasible, implement compensating controls to reduce the risk. Restrict network access to the Foreman management interface to a limited set of trusted administrative IP addresses. If a Web Application Firewall (WAF) is in use, deploy virtual patching rules to inspect and block malicious requests targeting the vulnerable plugin components.

Exploitation status

Public Exploit Available: false

Analyst recommendation

Given the high CVSS score of 8.1, this vulnerability presents a significant and immediate risk to the security of your virtualization management infrastructure. We strongly recommend that organizations prioritize the deployment of the vendor-supplied security patches to all affected systems without delay. Although this CVE is not currently listed on the CISA KEV catalog, its severity makes it a prime candidate for future inclusion and a valuable target for attackers. Proactive patching is the most effective strategy to prevent potential exploitation and safeguard critical assets.