CVE-2026-17527 (GCVE-0-2026-17527)

Vulnerability from cvelistv5 – Published: 2026-07-27 09:31 – Updated: 2026-08-26 15:51
VLAI
Title
Virt-cdi-operator: containerized-data-importer: cdi.kubevirt.io:view aggregated clusterrole grants create on datavolumes/source, allowing unauthorized pvc clone
Summary
In containerized-data-importer (CDI), the aggregated cdi.kubevirt.io:view ClusterRole, intended to provide read-only access to CDI resources, includes a rule granting create on the datavolumes/source subresource. CDI's DataVolume clone authorization accepts this permission as sufficient to authorize cloning the contents of any PVC the caller can name, without requiring write access to the source namespace. A user or service account bound to the view role, commonly granted cluster-wide via ClusterRoleBinding, who also has ordinary write access (edit/admin) to any single namespace, can use this to exfiltrate the contents of any PVC in the cluster into a namespace they control, bypassing namespace isolation and the read-only guarantee of the view role.
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 · CISA-ADP (v2.0.3)
Decision recorded 2026-07-27 18:09 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:59062 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:59083 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:59109 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:60117 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:60301 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-17527 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2507413 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version CPE status
Red Hat Red Hat Container Native Virtualization 4.18 Unaffected: 1787586357 , < * (rpm)
    cpe:/a:redhat:container_native_virtualization:4.18::el9
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Red Hat Red Hat Container Native Virtualization 4.19 Unaffected: 1787234290 , < * (rpm)
    cpe:/a:redhat:container_native_virtualization:4.19::el9
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Red Hat Red Hat Container Native Virtualization 4.20 Unaffected: 1787231995 , < * (rpm)
    cpe:/a:redhat:container_native_virtualization:4.20::el9
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Red Hat Red Hat Container Native Virtualization 4.21 Unaffected: 1787235286 , < * (rpm)
    cpe:/a:redhat:container_native_virtualization:4.21::el9
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Red Hat Red Hat Container Native Virtualization 4.22 Unaffected: 1787295217 , < * (rpm)
    cpe:/a:redhat:container_native_virtualization:4.22::el9
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Red Hat Red Hat OpenShift Virtualization 4     cpe:/a:redhat:container_native_virtualization:4
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Date Public
2026-07-27 00:00
Show details on NVD website
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\"https://access.redhat.com/errata/RHSA-2026:60301\", \"name\": \"RHSA-2026:60301\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/security/cve/CVE-2026-17527\", \"tags\": [\"vdb-entry\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=2507413\", \"name\": \"RHBZ#2507413\", \"tags\": [\"issue-tracking\", \"x_refsource_REDHAT\"]}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"Until a fix is available, cluster administrators should avoid granting cdi.kubevirt.io:view (or the built-in Kubernetes view role, which aggregates it) via cluster-wide ClusterRoleBinding. Prefer namespace-scoped RoleBindings, and audit which namespaces grant both view-equivalent access and separate edit/admin access to the same identities, since that combination is what enables cross-namespace data exfiltration.\"}], \"x_generator\": {\"engine\": \"cvelib 1.8.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In containerized-data-importer (CDI), the aggregated cdi.kubevirt.io:view ClusterRole, intended to provide read-only access to CDI resources, includes a rule granting create on the datavolumes/source subresource. CDI\u0027s DataVolume clone authorization accepts this permission as sufficient to authorize cloning the contents of any PVC the caller can name, without requiring write access to the source namespace. A user or service account bound to the view role, commonly granted cluster-wide via ClusterRoleBinding, who also has ordinary write access (edit/admin) to any single namespace, can use this to exfiltrate the contents of any PVC in the cluster into a namespace they control, bypassing namespace isolation and the read-only guarantee of the view role.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-639\", \"description\": \"Authorization Bypass Through User-Controlled Key\"}]}], \"providerMetadata\": {\"orgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"shortName\": \"redhat\", \"dateUpdated\": \"2026-08-26T15:51:18.015Z\"}, \"x_redhatCweChain\": \"CWE-639: Authorization Bypass Through User-Controlled Key\"}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-17527\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-26T15:51:18.015Z\", \"dateReserved\": \"2026-07-27T08:42:15.783Z\", \"assignerOrgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"datePublished\": \"2026-07-27T09:31:40.761Z\", \"assignerShortName\": \"redhat\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.


Detection rules are retrieved from Rulezet.