FKIE_CVE-2026-71404

Vulnerability from fkie_nvd - Published: 2026-09-03 15:17 - Updated: 2026-09-18 14:58
Severity
8.7 (High) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H
Summary
A flaw was found in Rancher Manager. The GlobalRole controller derived the target ClusterRole name from the user-settable `authz.management.cattle.io/cr-name` annotation and overwrote that object's rules without verifying ownership. A user with delegated GlobalRole create or update permission could point the annotation at any existing ClusterRole, such as `cluster-admin`, and revoke the permissions of every principal bound to it. The change persists after the malicious GlobalRole is deleted. This issue affects Rancher: before 2.15.1.
References
meissner@suse.dehttps://github.com/rancher/rancher/pull/56593Issue Tracking, Patch
meissner@suse.dehttps://github.com/rancher/rancher/pull/56642Issue Tracking, Patch
Impacted products
Vendor Product Version
suse rancher *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Rancher",
          "repo": "https://github.com/rancher/rancher",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "2.15.1",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "meissner@suse.de"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C911F079-FC7A-48EB-9A06-C86AFC6FC1AD",
              "versionEndExcluding": "2.15.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in Rancher Manager. The GlobalRole controller derived the target ClusterRole name from the user-settable `authz.management.cattle.io/cr-name` annotation and overwrote that object\u0027s rules without verifying ownership. A user with delegated GlobalRole create or update permission could point the annotation at any existing ClusterRole, such as `cluster-admin`, and revoke the permissions of every principal bound to it. The change persists after the malicious GlobalRole is deleted.\n\n\nThis issue affects Rancher: before 2.15.1."
    }
  ],
  "id": "CVE-2026-71404",
  "lastModified": "2026-09-18T14:58:34.653",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.7,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.3,
        "impactScore": 5.8,
        "source": "meissner@suse.de",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-71404",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-03T15:06:03.098792Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-03T15:17:32.327",
  "references": [
    {
      "source": "meissner@suse.de",
      "tags": [
        "Issue Tracking",
        "Patch"
      ],
      "url": "https://github.com/rancher/rancher/pull/56593"
    },
    {
      "source": "meissner@suse.de",
      "tags": [
        "Issue Tracking",
        "Patch"
      ],
      "url": "https://github.com/rancher/rancher/pull/56642"
    }
  ],
  "sourceIdentifier": "meissner@suse.de",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-639"
        }
      ],
      "source": "meissner@suse.de",
      "type": "Secondary"
    }
  ]
}



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