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CVE-2026-88983— Kubeflow Pipelines — API server fetches a caller-supplied pipelineURL without host validation

Quick assessment

Affected
kubeflow pipelines
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Kubeflow Pipelines 允许用户构建和部署可移植、可扩展的机器学习工作流。在 2.17.0 版本之前，API 服务器在创建 pipeline 和 pipeline-version 的路径中，会获取由调用方提供的 pipelineURL，且未对目标地址进行限制。拥有创建 pipeline 或 pipeline-version 权限的已认证调用方，可促使 API 服务器向内部服务发起请求，并观察到一个有限的状态码预言机（status-code oracle）。目前尚未证实存在任意响应体泄露、凭证窃取，或对

CVSS 5.0 · Medium
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I. Basic Information for CVE-2026-88983

Vulnerability Information
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Vulnerability Title
Kubeflow Pipelines — API server fetches a caller-supplied pipelineURL without host validation
Source: CVE Program / CVE List V5
Vulnerability Description
Kubeflow Pipelines enables users to build and deploy portable, scalable machine learning workflows. Prior to 2.17.0, the API server's pipeline and pipeline-version creation paths fetch a caller-supplied pipelineURL without restricting the destination. An authenticated caller with permission to create a pipeline or pipeline version can make requests from the API server to internal services and observe a limited status-code oracle. Arbitrary response-body disclosure, credential theft, and integrity or availability impact are not established. This issue is fixed in version 2.17.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
未有动机的代理或中间人(混淆代理)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
kubeflow pipelines < 2.17.0 -

II. Public POCs for CVE-2026-88983

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III. Intelligence Information for CVE-2026-88983

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Vendor Pages for CVE-2026-88983 (1)

Other References for CVE-2026-88983 (3)

Same Patch Batch · kubeflow · 2026-11-05 · 9 CVEs total

CVE-2026-77596 9.6 CRITICAL Kubeflow Pipelines API server lacks authorization for shared pipeline uploads
CVE-2026-88981 8.6 HIGH Kubeflow Pipelines: Unauthenticated SSRF through artifact provider endpoints
CVE-2026-88980 8.6 HIGH Kubeflow Pipelines: Unauthenticated server-side request forgery in the frontend http/https
CVE-2026-88984 7.2 HIGH Kubeflow Pipelines: RBAC bypass on shared pipelines allows any authenticated user to delet
CVE-2026-88985 6.5 MEDIUM Kubeflow Pipelines: SQL injection through unvalidated pagination tokens in Kubeflow Pipeli
CVE-2026-88986 6.1 MEDIUM Kubeflow Pipelines: Reflected XSS in the frontend pod information and events error respons
CVE-2026-88979 5.8 MEDIUM Kubeflow Pipelines: Unauthenticated SSRF vulnerability in Kubeflow Pipelines TensorBoard p
CVE-2026-88982 5.4 MEDIUM Kubeflow Pipelines: Cross-tenant execution-cache poisoning / output substitution via a nam

IV. Related Vulnerabilities

Same product: pipelines
Same vendor: kubeflow
Same weakness: CWE-441