CVE-2026-9804
Kubevirt: kubevirt: vmexport directory symlink escape enables exporter pod file read
CVSS Score
7.7
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-59 |
| Vendor | red hat |
| Product | red hat container native virtualization 4.17 |
| Published | May 28, 2026 |
| Last Updated | Jul 21, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
Red Hat / Red Hat Container Native Virtualization 4.17
All versions affected Red Hat / Red Hat Container Native Virtualization 4.18
All versions affected Red Hat / Red Hat Container Native Virtualization 4.19
All versions affected Red Hat / Red Hat Container Native Virtualization 4.20
All versions affected Red Hat / Red Hat Container Native Virtualization 4.21
All versions affected Red Hat / Red Hat OpenShift Virtualization 4
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2026:27903 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:27913 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:27914 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:27983 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:28002 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-9804 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2482487 security.access.redhat.com: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-9804.json
Credits
Red Hat would like to thank Thai Son Dinh, GitHub: @sondt99 (VinSOC) for reporting this issue.