CVE-2026-118760 (GCVE-0-2026-118760)

Vulnerability from cvelistv5 – Published: 2026-10-29 16:35 – Updated: 2026-10-29 16:35
VLAI
Title
Kubeflow Pipelines: Missing namespace authorization permits cross-tenant artifact reads
Summary
Kubeflow Pipelines enables users to build and deploy portable, scalable machine learning workflows. From 0.5.1 until 2.17.0, the frontend artifact routes did not check whether an authenticated user was authorized to access the requested namespace. A user who can reach the frontend and knows an artifact location can select another tenant's namespace, or omit the namespace and reach an unguarded direct handler, to read artifact contents such as datasets, models, or pipeline outputs. The issue applies to multi-user deployments that rely on Kubeflow Pipelines authorization for tenant isolation. Authentication at ingress identifies the caller but does not authorize access to the selected artifact namespace. The issue does not establish arbitrary Kubernetes Secret disclosure, storage modification, or server-side code execution. This issue is fixed in version 2.17.0.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
  • CWE-862 - Missing Authorization
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 8086 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
kubeflow pipelines Affected: < 2.17.0
guessed Create a notification for this product.
Show details on NVD website
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "pipelines",
          "vendor": "kubeflow",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.17.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Kubeflow Pipelines enables users to build and deploy portable, scalable machine learning workflows. From 0.5.1 until 2.17.0, the frontend artifact routes did not check whether an authenticated user was authorized to access the requested namespace. A user who can reach the frontend and knows an artifact location can select another tenant\u0027s namespace, or omit the namespace and reach an unguarded direct handler, to read artifact contents such as datasets, models, or pipeline outputs. The issue applies to multi-user deployments that rely on Kubeflow Pipelines authorization for tenant isolation. Authentication at ingress identifies the caller but does not authorize access to the selected artifact namespace. The issue does not establish arbitrary Kubernetes Secret disclosure, storage modification, or server-side code execution. This issue is fixed in version 2.17.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-639",
              "description": "CWE-639: Authorization Bypass Through User-Controlled Key",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "CWE-862: Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-29T16:35:05.192Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/kubeflow/pipelines/security/advisories/GHSA-vjhf-6c8f-qhwj",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/kubeflow/pipelines/security/advisories/GHSA-vjhf-6c8f-qhwj"
        },
        {
          "name": "https://github.com/kubeflow/pipelines/issues/9889",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/kubeflow/pipelines/issues/9889"
        },
        {
          "name": "https://github.com/kubeflow/pipelines/pull/12860",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/kubeflow/pipelines/pull/12860"
        },
        {
          "name": "https://github.com/kubeflow/pipelines/commit/fb69119c997402ebddab4f6410c617cb3d3634ba",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/kubeflow/pipelines/commit/fb69119c997402ebddab4f6410c617cb3d3634ba"
        },
        {
          "name": "https://github.com/kubeflow/pipelines/releases/tag/2.17.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/kubeflow/pipelines/releases/tag/2.17.0"
        }
      ],
      "source": {
        "advisory": "GHSA-vjhf-6c8f-qhwj",
        "discovery": "UNKNOWN"
      },
      "title": "Kubeflow Pipelines: Missing namespace authorization permits cross-tenant artifact reads"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-118760",
    "datePublished": "2026-10-29T16:35:05.192Z",
    "dateReserved": "2026-10-28T19:20:05.017Z",
    "dateUpdated": "2026-10-29T16:35:05.192Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-118760",
      "date": "2026-10-31",
      "epss": "0.00352",
      "percentile": "0.2883"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "pipelines",
                "vendor": "kubeflow",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 2.17.0"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Kubeflow Pipelines enables users to build and deploy portable, scalable machine learning workflows. From 0.5.1 until 2.17.0, the frontend artifact routes did not check whether an authenticated user was authorized to access the requested namespace. A user who can reach the frontend and knows an artifact location can select another tenant\u0027s namespace, or omit the namespace and reach an unguarded direct handler, to read artifact contents such as datasets, models, or pipeline outputs. The issue applies to multi-user deployments that rely on Kubeflow Pipelines authorization for tenant isolation. Authentication at ingress identifies the caller but does not authorize access to the selected artifact namespace. The issue does not establish arbitrary Kubernetes Secret disclosure, storage modification, or server-side code execution. This issue is fixed in version 2.17.0."
          }
        ],
        "id": "CVE-2026-118760",
        "lastModified": "2026-10-30T17:18:03.880",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 6.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 3.6,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-10-29T17:18:06.770",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/kubeflow/pipelines/commit/fb69119c997402ebddab4f6410c617cb3d3634ba"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/kubeflow/pipelines/issues/9889"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/kubeflow/pipelines/pull/12860"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/kubeflow/pipelines/releases/tag/2.17.0"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/kubeflow/pipelines/security/advisories/GHSA-vjhf-6c8f-qhwj"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Awaiting Analysis",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-639"
              },
              {
                "lang": "en",
                "value": "CWE-862"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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