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CVE-2026-88981— Kubeflow Pipelines: Unauthenticated SSRF through artifact provider endpoints

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 2.18.0 版本之前，当数据源为 或 时，前端工件下载路径会接受 参数；同时，归档的 Pod 日志路径也会接受来自工作流状态的 S3 兼容端点元数据，而无需这些端点与由操作员控制的存储配置相匹配。在随附的已禁用授权的独立部署配置中，未经验证的调用者可以诱导共享的 Pod 连接到任意可访问的主机并返回响应数据；此外，若请求使用已配置的对象存储凭据进行签名，还可能泄露访问密钥标识符。基于多用户密钥的元数据仍受限于服务器命名空间

CVSS 8.6 · High
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I. Basic Information for CVE-2026-88981

Vulnerability Information
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Vulnerability Title
Kubeflow Pipelines: Unauthenticated SSRF through artifact provider endpoints
Source: CVE Program / CVE List V5
Vulnerability Description
Kubeflow Pipelines enables users to build and deploy portable, scalable machine learning workflows. Prior to 2.18.0, the frontend artifact download path for source=s3 or source=minio accepts providerInfo.Params.endpoint, and the archived pod-log path accepts S3-compatible endpoint metadata from workflow status, without requiring those endpoints to match operator-controlled storage configuration. In the shipped authorization-disabled standalone configuration, an unauthenticated caller can make the shared ml-pipeline-ui pod connect to arbitrary reachable hosts and return response data; requests may also reveal an access-key identifier when signed with configured object-store credentials. Multi-user secret-backed metadata remains restricted to the server namespace. This issue is fixed in version 2.18.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
kubeflow pipelines < 2.18.0 -

II. Public POCs for CVE-2026-88981

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III. Intelligence Information for CVE-2026-88981

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Vendor Pages for CVE-2026-88981 (1)

Other References for CVE-2026-88981 (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-2026-88980 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
CVE-2026-88983 5.0 MEDIUM Kubeflow Pipelines — API server fetches a caller-supplied pipelineURL without host validat

IV. Related Vulnerabilities

Same product: pipelines
Same vendor: kubeflow
Same weakness: CWE-918