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Submariner-operator: release workflow consumes same-org composite action via mutable @devel branch ref

Type: advisorySource: Official CVE List1 source record

A flaw was found in the `submariner-operator` component of Red Hat Advanced Cluster Management for Kubernetes. This vulnerability allows a cluster administrator, or any user with permissions to modify the Submariner Custom Resource (CR), to specify an unvalidated image path. This lack of validation enables an attacker to execute arbitrary code with elevated privileges across the entire cluster, including control-plane nodes, by deploying a malicious image.

Announced Source revision 1
Original source ↗

CVE-2026-66783

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-66783

Red Hat Advanced Cluster Management for Kubernetes 2.16

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Red Hat Advanced Cluster Management for Kubernetes 2.16

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Red Hat Advanced Cluster Management for Kubernetes 2.17

Source reference: /containers/cna/affected/2/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Red Hat Advanced Cluster Management for Kubernetes 2.17

Source reference: /containers/cna/affected/3/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Red Hat Advanced Cluster Management for Kubernetes 2

Source reference: /containers/cna/affected/4/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Red Hat Advanced Cluster Management for Kubernetes 2

Source reference: /containers/cna/affected/5/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "cpes": [
      "cpe:/a:redhat:acm:2.16::el9"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Advanced Cluster Management for Kubernetes 2.16",
    "versions": [
      {
        "status": "unaffected",
        "version": "1790670243",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "rhacm2/subctl-rhel9",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/a:redhat:acm:2.16::el9"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Advanced Cluster Management for Kubernetes 2.16",
    "versions": [
      {
        "status": "unaffected",
        "version": "1790670912",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "rhacm2/submariner-rhel9-operator",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/a:redhat:acm:2.17::el9"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Advanced Cluster Management for Kubernetes 2.17",
    "versions": [
      {
        "status": "unaffected",
        "version": "1788105072",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "rhacm2/subctl-rhel9",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/a:redhat:acm:2.17::el9"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Advanced Cluster Management for Kubernetes 2.17",
    "versions": [
      {
        "status": "unaffected",
        "version": "1788073481",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "rhacm2/submariner-rhel9-operator",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/a:redhat:acm:2"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Advanced Cluster Management for Kubernetes 2",
    "packageName": "rhacm2/submariner-addon-rhel9",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/a:redhat:acm:2"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Advanced Cluster Management for Kubernetes 2",
    "packageName": "rhacm2/submariner-operator-bundle",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-66783

Source reference: /cveMetadata/cveId

Publisher severity

medium

Source reference: /containers/cna/metrics

Event
#39056 · Revision 1
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Publisher date
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