Vulnerability in Red Hat Container Native Virtualization 4.17

CVE-2026-9804

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.

EPSS: 0.005 (42.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-9804?
CVE-2026-9804 is a high-severity vulnerability in Red Hat Container Native Virtualization 4.17, classified under Improper Link Resolution Before File Access. CVSS score: 7.7/10. Published 2026-05-28.
How severe is CVE-2026-9804?
High severity. CVSS v3 base score is 7.7 out of 10.