Vulnerability-Lookup

RHSA-2026:93958

Vulnerability from csaf_redhat - Published: 2026-11-02 15:48 - Updated: 2026-11-03 03:57

Summary

Red Hat Security Advisory: OpenShift Virtualization v4.17 Images

Severity

Important

Notes

Topic: Red Hat OpenShift Virtualization release v4.17 is now available with updates to packages and images that fix several bugs and add enhancements.

Details: OpenShift Virtualization is Red Hat's virtualization solution designed for Red Hat OpenShift Container Platform. This advisory contains OpenShift Virtualization v4.17 images.

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2026-17527

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.

7.7 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

CWE-639 - Authorization Bypass Through User-Controlled Key

Affected products

Fixed 2 products

Product	Identifier	Version	Remediation
Unresolved product id: Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-operator-rhel9@sha256:3cb334c0b7816dba88174b04db80b3b37aa23a28a79c30f2032d24a0ede018e9_arm64		—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-operator-rhel9@sha256:787099ceff5bd041970f922d7b824331b3e3a9b945a2bfa1dfe6a2d07d6f644e_amd64		—	Vendor Fix fix Workaround

Known not affected 12 products

Product	Version	Remediation
Unresolved product id: Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-apiserver-rhel9@sha256:b2981f9e66ee565394edca94ce5321f180b04f057feed92ded2967c4020a624b_arm64	—	Workaround
Unresolved product id: Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-apiserver-rhel9@sha256:cbe4c56dde95a244556f97cef5d693a22505a99c23ec5682f4189035fcc64dcd_amd64	—	Workaround
Unresolved product id: Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-cloner-rhel9@sha256:505099eb3eff2ef81932b9ff850224aeecef26b8e8ac03bbe95d89a225107c04_arm64	—	Workaround
Unresolved product id: Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-cloner-rhel9@sha256:ccb6a95eda8c344b2f7fb8f24a5c681dcc98fa12650a936a34268e0e916d9b98_amd64	—	Workaround
Unresolved product id: Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-controller-rhel9@sha256:3652ae08daa1ae5fe1d7938170d47697a304158108ae28920e54cd0d757263da_amd64	—	Workaround
Unresolved product id: Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-controller-rhel9@sha256:a006af9f0b1d4d36303a7b93400ba96a02422537d58aa9751979804159d0e74e_arm64	—	Workaround
Unresolved product id: Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-importer-rhel9@sha256:09840e5d26f4f39f9fa2550807f762314c838d60f47dcfa39147a49096fdac1c_arm64	—	Workaround
Unresolved product id: Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-importer-rhel9@sha256:e724751b323ce902abc969765ccc49444712d30479ea6812e874c4e1025a2f32_amd64	—	Workaround
Unresolved product id: Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-uploadproxy-rhel9@sha256:1e50963f768243dd4873a0bb70bcb410cb73b378ec1b4a3a114c4710617967b8_amd64	—	Workaround
Unresolved product id: Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-uploadproxy-rhel9@sha256:8573a1e58cae0cfe4b2173fab84b0927b51f8b92c259642d921dced4ab6342d2_arm64	—	Workaround
Unresolved product id: Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-uploadserver-rhel9@sha256:4ef8b97e8257d51422bac95782137e5c72b84bdac839906d802341775f13566a_arm64	—	Workaround
Unresolved product id: Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-uploadserver-rhel9@sha256:94cf189b720a7e5b3b40aa44e12d66f03f93bfa22de43555fcb34659b0f8a37c_amd64	—	Workaround

Threats

Impact Important

References

8 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:93958	self
https://access.redhat.com/security/cve/CVE-2026-17527	external
https://access.redhat.com/security/updates/classi…	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2026-17527	self
https://bugzilla.redhat.com/show_bug.cgi?id=2507413	external
https://www.cve.org/CVERecord?id=CVE-2026-17527	external
https://nvd.nist.gov/vuln/detail/CVE-2026-17527	external

JSON

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          "text": "2507413"
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          "category": "description",
          "text": "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.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "virt-cdi-operator: containerized-data-importer: cdi.kubevirt.io:view aggregated ClusterRole grants create on datavolumes/source, allowing unauthorized PVC clone",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This flaw is confirmed upstream in kubevirt/containerized-data-importer and affects all downstream consumers using CDI\u0027s default aggregated RBAC roles, including OpenShift Virtualization. It is distinct from the SSP operator\u0027s \"golden images\" pattern, which deliberately and correctly scopes an equivalent permission via a namespace-scoped Role/RoleBinding.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
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        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-17527"
        },
        {
          "category": "external",
          "summary": "RHBZ#2507413",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507413"
        },
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          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-17527",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-17527"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-17527",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-17527"
        }
      ],
      "release_date": "2026-07-27T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-11-02T15:48:23+00:00",
          "details": "Before applying this update, make sure all previously released errata relevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
            "Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-operator-rhel9@sha256:3cb334c0b7816dba88174b04db80b3b37aa23a28a79c30f2032d24a0ede018e9_arm64",
            "Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-operator-rhel9@sha256:787099ceff5bd041970f922d7b824331b3e3a9b945a2bfa1dfe6a2d07d6f644e_amd64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:93958"
        },
        {
          "category": "workaround",
          "details": "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.",
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            "Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-apiserver-rhel9@sha256:cbe4c56dde95a244556f97cef5d693a22505a99c23ec5682f4189035fcc64dcd_amd64",
            "Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-cloner-rhel9@sha256:505099eb3eff2ef81932b9ff850224aeecef26b8e8ac03bbe95d89a225107c04_arm64",
            "Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-cloner-rhel9@sha256:ccb6a95eda8c344b2f7fb8f24a5c681dcc98fa12650a936a34268e0e916d9b98_amd64",
            "Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-controller-rhel9@sha256:3652ae08daa1ae5fe1d7938170d47697a304158108ae28920e54cd0d757263da_amd64",
            "Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-controller-rhel9@sha256:a006af9f0b1d4d36303a7b93400ba96a02422537d58aa9751979804159d0e74e_arm64",
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            "Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-uploadproxy-rhel9@sha256:8573a1e58cae0cfe4b2173fab84b0927b51f8b92c259642d921dced4ab6342d2_arm64",
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          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
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            "Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-controller-rhel9@sha256:a006af9f0b1d4d36303a7b93400ba96a02422537d58aa9751979804159d0e74e_arm64",
            "Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-importer-rhel9@sha256:09840e5d26f4f39f9fa2550807f762314c838d60f47dcfa39147a49096fdac1c_arm64",
            "Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-importer-rhel9@sha256:e724751b323ce902abc969765ccc49444712d30479ea6812e874c4e1025a2f32_amd64",
            "Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-operator-rhel9@sha256:3cb334c0b7816dba88174b04db80b3b37aa23a28a79c30f2032d24a0ede018e9_arm64",
            "Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-operator-rhel9@sha256:787099ceff5bd041970f922d7b824331b3e3a9b945a2bfa1dfe6a2d07d6f644e_amd64",
            "Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-uploadproxy-rhel9@sha256:1e50963f768243dd4873a0bb70bcb410cb73b378ec1b4a3a114c4710617967b8_amd64",
            "Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-uploadproxy-rhel9@sha256:8573a1e58cae0cfe4b2173fab84b0927b51f8b92c259642d921dced4ab6342d2_arm64",
            "Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-uploadserver-rhel9@sha256:4ef8b97e8257d51422bac95782137e5c72b84bdac839906d802341775f13566a_arm64",
            "Red Hat Container Native Virtualization 4.17:registry.redhat.io/container-native-virtualization/virt-cdi-uploadserver-rhel9@sha256:94cf189b720a7e5b3b40aa44e12d66f03f93bfa22de43555fcb34659b0f8a37c_amd64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "virt-cdi-operator: containerized-data-importer: cdi.kubevirt.io:view aggregated ClusterRole grants create on datavolumes/source, allowing unauthorized PVC clone"
    }
  ]
}

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

Vulnerability from cvelistv5 – Published: 2026-07-27 09:31 – Updated: 2026-11-03 03:45

Title

Virt-cdi-operator: containerized-data-importer: cdi.kubevirt.io:view aggregated clusterrole grants create on datavolumes/source, allowing unauthorized pvc clone

Summary

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

redhat CNA under the redhat root

CNA scorecard B 82/100 over 1153 records in the last 180 days details

References

10 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/errata/RHSA-2026:61666	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:62599	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:93958	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

9 products

Vendor	Product	Version
Red Hat	Red Hat Container Native Virtualization 4.14	Unaffected: 1788157795 , < * (rpm) cpe:/a:redhat:container_native_virtualization:4.14::el9
Red Hat	Red Hat Container Native Virtualization 4.16	Unaffected: 1787585647 , < * (rpm) cpe:/a:redhat:container_native_virtualization:4.16::el9
Red Hat	Red Hat Container Native Virtualization 4.17	Unaffected: 1793257366 , < * (rpm) cpe:/a:redhat:container_native_virtualization:4.17::el9
Red Hat	Red Hat Container Native Virtualization 4.18	Unaffected: 1787586357 , < * (rpm) cpe:/a:redhat:container_native_virtualization:4.18::el9
Red Hat	Red Hat Container Native Virtualization 4.19	Unaffected: 1787234290 , < * (rpm) cpe:/a:redhat:container_native_virtualization:4.19::el9
Red Hat	Red Hat Container Native Virtualization 4.20	Unaffected: 1787231995 , < * (rpm) cpe:/a:redhat:container_native_virtualization:4.20::el9
Red Hat	Red Hat Container Native Virtualization 4.21	Unaffected: 1787235286 , < * (rpm) cpe:/a:redhat:container_native_virtualization:4.21::el9
Red Hat	Red Hat Container Native Virtualization 4.22	Unaffected: 1787295217 , < * (rpm) cpe:/a:redhat:container_native_virtualization:4.22::el9
Red Hat	Red Hat OpenShift Virtualization 4	cpe:/a:redhat:container_native_virtualization:4

Date Public

2026-07-27 00:00

Show details on NVD website

JSON

To clipboard

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        },
        {
          "name": "RHSA-2026:93958",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2026:93958"
        },
        {
          "tags": [
            "vdb-entry",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/security/cve/CVE-2026-17527"
        },
        {
          "name": "RHBZ#2507413",
          "tags": [
            "issue-tracking",
            "x_refsource_REDHAT"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507413"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-07-27T08:41:37.809Z",
          "value": "Reported to Red Hat."
        },
        {
          "lang": "en",
          "time": "2026-07-27T00:00:00.000Z",
          "value": "Made public."
        }
      ],
      "title": "Virt-cdi-operator: containerized-data-importer: cdi.kubevirt.io:view aggregated clusterrole grants create on datavolumes/source, allowing unauthorized pvc clone",
      "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"
      },
      "x_redhatCweChain": "CWE-639: Authorization Bypass Through User-Controlled Key"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2026-17527",
    "datePublished": "2026-07-27T09:31:40.761Z",
    "dateReserved": "2026-07-27T08:42:15.783Z",
    "dateUpdated": "2026-11-03T03:45:40.830Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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