{"id":"CVE-2026-17527","title":"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","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 a…","severity":"high","cvss":7.7,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","cwe":["CWE-639"],"vendor":"Red Hat","product":"container-native-virtualization/virt-cdi-operator-rhel9","affected":["container-native-virtualization/virt-cdi-operator-rhel9 (all versions)","container-native-virtualization/virt-cdi-operator-rhel9 (all versions)","container-native-virtualization/virt-cdi-operator-rhel9 (all versions)","container-native-virtualization/virt-cdi-operator-rhel9 (all versions)","container-native-virtualization/virt-cdi-operator-rhel9 (all versions)","container-native-virtualization/virt-cdi-operator-rhel9 (all versions)","container-native-virtualization/virt-cdi-operator-rhel9 (all versions)","container-native-virtualization/virt-cdi-operator (all versions)"],"published":"2026-07-27","updated":"2026-09-21","sourceUpdated":"2026-09-21T15:17:28.180","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-17527","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:59062","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:59083","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:59109","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:60117","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:60301","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:61666","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:62599","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-17527","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507413","label":"secalert@redhat.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-17527.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-17527"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-17527"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-07-27T18:09:12.042841Z"},"epss":0.00321,"epssPercentile":0.2541,"ingestedAt":"2026-09-08T17:06:31.922Z","patched":["container_native_virtualization 4.14","container_native_virtualization 4.16","container_native_virtualization 4.18","container_native_virtualization 4.19","container_native_virtualization 4.20","container_native_virtualization 4.21","container_native_virtualization 4.22"],"slug":"CVE-2026-17527","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **RHSA-2026:62599** · Red Hat · fixed in: Red Hat Container Native Virtualization 4.14 · released 2026-09-02 · [advisory](https://access.redhat.com/errata/RHSA-2026:62599)\n- **RHSA-2026:61666** · Red Hat · fixed in: Red Hat Container Native Virtualization 4.16 · released 2026-08-31 · [advisory](https://access.redhat.com/errata/RHSA-2026:61666)\n- **RHSA-2026:60301** · Red Hat · fixed in: Red Hat Container Native Virtualization 4.18 · released 2026-08-26 · [advisory](https://access.redhat.com/errata/RHSA-2026:60301)\n- **RHSA-2026:59109** · Red Hat · fixed in: Red Hat Container Native Virtualization 4.19 · released 2026-08-24 · [advisory](https://access.redhat.com/errata/RHSA-2026:59109)\n- **RHSA-2026:59083** · Red Hat · fixed in: Red Hat Container Native Virtualization 4.20 · released 2026-08-24 · [advisory](https://access.redhat.com/errata/RHSA-2026:59083)\n- **RHSA-2026:59062** · Red Hat · fixed in: Red Hat Container Native Virtualization 4.21 · released 2026-08-24 · [advisory](https://access.redhat.com/errata/RHSA-2026:59062)\n- **RHSA-2026:60117** · Red Hat · fixed in: Red Hat Container Native Virtualization 4.22 · released 2026-08-26 · [advisory](https://access.redhat.com/errata/RHSA-2026:60117)\n- **Red Hat VEX** · Important · affected: Red Hat OpenShift Virtualization 4 · no fix planned: Red Hat OpenShift Virtualization 4 · updated 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-17527.json)","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":42.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}