CVE-2026-9804
HighCVSS 7.7Exploitation Probability (EPSS)
Low risk40th percentile - higher than 40% of all known CVEs
Summary
A path traversal vulnerability was found in KubeVirt's virt-exportserver component. An attacker with namespace-level access can place a symbolic link in an exported PVC pointing outside its mount root, allowing arbitrary file reads from the exporter pod's filesystem.
Risk Assessment
The risk is information disclosure, potentially exposing sensitive data such as configurations, keys, or application data from the exporter pod to an unauthorized attacker.
Recommendation
Immediately update KubeVirt to a version containing the fix for the path traversal vulnerability in virt-exportserver and restrict PVC creation permissions in namespaces.
Original NVD description (English source)
A flaw was found in KubeVirt's virt-exportserver component. An attacker with specific namespace-level access can exploit a path traversal vulnerability in the VMExport directory endpoint. By placing a symbolic link (symlink) within an exported filesystem Persistent Volume Claim (PVC) that points outside its designated mount root, the attacker can read arbitrary files from the exporter pod's filesystem. This leads to information disclosure, potentially exposing sensitive data.