CVE-2026-9804 (GCVE-0-2026-9804)
Vulnerability from cvelistv5 – Published: 2026-05-28 08:15 – Updated: 2026-06-30 12:10
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)
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
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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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Credits
Red Hat would like to thank Thai Son Dinh, GitHub: @sondt99 (VinSOC) for reporting this issue.
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\"packageName\": \"container-native-virtualization/virt-exportserver-rhel9\", \"collectionURL\": \"https://catalog.redhat.com/software/containers/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:container_native_virtualization:4\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat OpenShift Virtualization 4\", \"packageName\": \"container-native-virtualization/virt-exportserver\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-05-18T00:00:00.000Z\", \"value\": \"Reported to Red Hat.\"}, {\"lang\": \"en\", \"time\": \"2026-05-28T06:00:00.000Z\", \"value\": \"Made public.\"}], \"datePublic\": \"2026-05-28T06:00:00.000Z\", \"references\": [{\"url\": \"https://access.redhat.com/errata/RHSA-2026:27903\", \"name\": \"RHSA-2026:27903\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:27913\", \"name\": \"RHSA-2026:27913\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:27914\", \"name\": \"RHSA-2026:27914\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:27983\", \"name\": \"RHSA-2026:27983\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:28002\", \"name\": \"RHSA-2026:28002\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/security/cve/CVE-2026-9804\", \"tags\": [\"vdb-entry\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=2482487\", \"name\": \"RHBZ#2482487\", \"tags\": [\"issue-tracking\", \"x_refsource_REDHAT\"]}], \"x_generator\": {\"engine\": \"cvelib 1.8.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"A flaw was found in KubeVirt\u0027s 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\u0027s filesystem. This leads to information disclosure, potentially exposing sensitive data.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-59\", \"description\": \"Improper Link Resolution Before File Access (\u0027Link Following\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"shortName\": \"redhat\", \"dateUpdated\": \"2026-06-22T19:24:45.875Z\"}, \"x_redhatCweChain\": \"CWE-59: Improper Link Resolution Before File Access (\u0027Link Following\u0027)\"}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-9804\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-30T12:10:49.089Z\", \"dateReserved\": \"2026-05-28T06:10:07.134Z\", \"assignerOrgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"datePublished\": \"2026-05-28T08:15:39.779Z\", \"assignerShortName\": \"redhat\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
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.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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