CVE-2026-9804
7.7
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Red Hat | Red Hat Container Native Virtualization 4.17 | 1781757410 < * | unaffected |
| Red Hat | Red Hat Container Native Virtualization 4.18 | 1781928221 < * | unaffected |
| Red Hat | Red Hat Container Native Virtualization 4.19 | 1781590993 < * | unaffected |
| Red Hat | Red Hat Container Native Virtualization 4.20 | 1781838712 < * | unaffected |
| Red Hat | Red Hat Container Native Virtualization 4.21 | 1782012918 < * | unaffected |
Weaknesses
- CWE-59: Improper Link Resolution Before File Access ('Link Following')
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
kubevirt: kubevirt: VMExport directory symlink escape enables exporter pod file read
Additional References
- https://access.redhat.com/security/cve/CVE-2026-9804
- https://bugzilla.redhat.com/show_bug.cgi?id=2482487
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-9804.json
- https://access.redhat.com/errata/RHSA-2026:28002
- https://access.redhat.com/errata/RHSA-2026:27913
- https://access.redhat.com/errata/RHSA-2026:27914
- https://access.redhat.com/errata/RHSA-2026:27983
- https://access.redhat.com/errata/RHSA-2026:27903
References
- https://access.redhat.com/errata/RHSA-2026:27903
- https://access.redhat.com/errata/RHSA-2026:27913
- https://access.redhat.com/errata/RHSA-2026:27914
- https://access.redhat.com/errata/RHSA-2026:27983
- https://access.redhat.com/errata/RHSA-2026:28002
- https://access.redhat.com/security/cve/CVE-2026-9804
- https://bugzilla.redhat.com/show_bug.cgi?id=2482487
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