Path Traversal Vulnerability in KubeVirt's VMExport Component
CVE-2026-9804

7.7HIGH

Key Information:

Vendor

Red Hat
Status
Red Hat Openshift Virtualization 4
Vendor
CVE Published:
28 May 2026

What is CVE-2026-9804?

A security flaw exists in the KubeVirt 'virt-exportserver' component that allows an attacker with specific namespace-level access to exploit a path traversal vulnerability. By creating a symbolic link within the exported filesystem Persistent Volume Claim (PVC) that points to locations outside its designated mount root, an attacker can gain unauthorized access to arbitrary files within the exporter pod's filesystem. This could lead to the disclosure of sensitive information, potentially compromising system integrity and confidentiality.

References

https://access.redhat.com/security/cve/CVE-2026-9804
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2482487
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
7.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Thai Son Dinh, GitHub: @sondt99 (VinSOC) for reporting this issue.
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