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FKIE_CVE-2026-89060

Vulnerability from fkie_nvd - Published: 2026-09-11 05:16 - Updated: 2026-09-11 21:17
Severity
7.7 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Summary
A cross-namespace authorization flaw in multicluster-observability-addon allows a user with permission to modify a managed cluster’s ManagedClusterAddOn configuration to reference ClusterLogForwarder or OpenTelemetryCollector resources outside the permitted namespace. If those resources reference Secrets, the add-on may copy the referenced Secrets to the attacker-controlled managed cluster.
References
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2026-89060
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2531596
secalert@redhat.comhttps://github.com/stolostron/multicluster-observability-addon/pull/644
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://github.com/stolostron/multicluster-observability-addon",
          "defaultStatus": "affected",
          "packageName": "multicluster-observability-addon",
          "repo": "https://github.com/stolostron/multicluster-observability-addon",
          "versions": [
            {
              "changes": [
                {
                  "at": "ad36a3ba9fd946c04de71621e47486f7aa2634fd",
                  "status": "unaffected"
                },
                {
                  "at": "683191e26a0ecb1a36d3e58470f1c1bed1ba62d4",
                  "status": "unaffected"
                },
                {
                  "at": "8139c3ac7d388e0b3b008d1fb7d9bbdfabe252bb",
                  "status": "unaffected"
                },
                {
                  "at": "691eb796f04e358adeae441b453dbfdc576ff7fe",
                  "status": "unaffected"
                },
                {
                  "at": "1f727af81d89c50c76d4db1f6ece7db39653006d",
                  "status": "unaffected"
                }
              ],
              "lessThan": "*",
              "status": "affected",
              "version": "0",
              "versionType": "git"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:acm:2"
          ],
          "defaultStatus": "affected",
          "packageName": "rhacm2/acm-multicluster-observability-addon-rhel9",
          "product": "Red Hat Advanced Cluster Management for Kubernetes 2",
          "vendor": "Red Hat"
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A cross-namespace authorization flaw in multicluster-observability-addon allows a user with permission to modify a managed cluster\u2019s ManagedClusterAddOn configuration to reference ClusterLogForwarder or OpenTelemetryCollector resources outside the permitted namespace. If those resources reference Secrets, the add-on may copy the referenced Secrets to the attacker-controlled managed cluster."
    }
  ],
  "id": "CVE-2026-89060",
  "lastModified": "2026-09-11T21:17:56.740",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 4.0,
        "source": "secalert@redhat.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-89060",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-11T16:31:51.529684Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-11T05:16:38.557",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/security/cve/CVE-2026-89060"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2531596"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://github.com/stolostron/multicluster-observability-addon/pull/644"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-551"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Secondary"
    }
  ]
}



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