CVE-2026-9804 (GCVE-0-2026-9804)

Vulnerability from cvelistv5 – Published: 2026-05-28 08:15 – Updated: 2026-06-22 19:24
VLAI
Title
Kubevirt: kubevirt: vmexport directory symlink escape enables exporter pod file read
Summary
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.
Severity
7.7 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:27903 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:27913 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:27914 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:27983 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:28002 vendor-advisoryx_refsource_REDHAT
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
Impacted products
Vendor Product Version
Red Hat Red Hat Container Native Virtualization 4.17 Unaffected: 1781757410 , < * (rpm)
    cpe:/a:redhat:container_native_virtualization:4.17::el9
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Red Hat Red Hat Container Native Virtualization 4.18 Unaffected: 1781928221 , < * (rpm)
    cpe:/a:redhat:container_native_virtualization:4.18::el9
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Red Hat Red Hat Container Native Virtualization 4.19 Unaffected: 1781590993 , < * (rpm)
    cpe:/a:redhat:container_native_virtualization:4.19::el9
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Red Hat Red Hat Container Native Virtualization 4.20 Unaffected: 1781838712 , < * (rpm)
    cpe:/a:redhat:container_native_virtualization:4.20::el9
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Red Hat Red Hat Container Native Virtualization 4.21 Unaffected: 1782012918 , < * (rpm)
    cpe:/a:redhat:container_native_virtualization:4.21::el9
 Create a notification for this product.
Red Hat Red Hat OpenShift Virtualization 4     cpe:/a:redhat:container_native_virtualization:4
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Date Public
2026-05-28 06:00
Credits
Red Hat would like to thank Thai Son Dinh, GitHub: @sondt99 (VinSOC) for reporting this issue.
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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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Detection rules are retrieved from Rulezet.