FKIE_CVE-2026-77596

Vulnerability from fkie_nvd - Published: 2026-11-05 23:17 - Updated: 2026-11-06 21:40
Severity
9.6 (Critical) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Summary
Kubeflow Pipelines enables users to build and deploy portable, scalable machine learning workflows. Prior to 2.18.0, the multi-user HTTP endpoints POST /apis/v2beta1/pipelines/upload and POST /apis/v2beta1/pipelines/upload_version call canUploadVersionedPipeline, which returns without SubjectAccessReview when the target namespace is empty while REQUIRE_NAMESPACE_FOR_PIPELINES defaults to false. A low-privilege tenant can create shared pipelines or inject attacker-controlled versions into existing shared pipelines without the required write permission; if the API server is directly reachable without an authenticating proxy, an unauthenticated caller can exploit the same bypass, while deployments protected by such a proxy do not expose anonymous access. An enabled unpinned recurring run that follows the latest version can then execute the injected specification in another tenant's namespace under that workload's service account, while pinned or embedded-specification runs are not automatically substituted. This issue is fixed in version 2.18.0.
References
security-advisories@github.comhttps://github.com/kubeflow/pipelines/commit/62516d8c525f146b754cb515cf441dd0290ad841
security-advisories@github.comhttps://github.com/kubeflow/pipelines/pull/14352
security-advisories@github.comhttps://github.com/kubeflow/pipelines/releases/tag/2.18.0
security-advisories@github.comhttps://github.com/kubeflow/pipelines/security/advisories/GHSA-rjr3-43j3-4q8g
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "pipelines",
          "vendor": "kubeflow",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.18.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Kubeflow Pipelines enables users to build and deploy portable, scalable machine learning workflows. Prior to 2.18.0, the multi-user HTTP endpoints POST /apis/v2beta1/pipelines/upload and POST /apis/v2beta1/pipelines/upload_version call canUploadVersionedPipeline, which returns without SubjectAccessReview when the target namespace is empty while REQUIRE_NAMESPACE_FOR_PIPELINES defaults to false. A low-privilege tenant can create shared pipelines or inject attacker-controlled versions into existing shared pipelines without the required write permission; if the API server is directly reachable without an authenticating proxy, an unauthenticated caller can exploit the same bypass, while deployments protected by such a proxy do not expose anonymous access. An enabled unpinned recurring run that follows the latest version can then execute the injected specification in another tenant\u0027s namespace under that workload\u0027s service account, while pinned or embedded-specification runs are not automatically substituted. This issue is fixed in version 2.18.0."
    }
  ],
  "id": "CVE-2026-77596",
  "lastModified": "2026-11-06T21:40:43.450",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 9.6,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 5.8,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-11-05T23:17:00.767",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/kubeflow/pipelines/commit/62516d8c525f146b754cb515cf441dd0290ad841"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/kubeflow/pipelines/pull/14352"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/kubeflow/pipelines/releases/tag/2.18.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/kubeflow/pipelines/security/advisories/GHSA-rjr3-43j3-4q8g"
    }
  ],
  "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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