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CVE-2026-88984— Kubeflow Pipelines: RBAC bypass on shared pipelines allows any authenticated user to delete or modify global pipelines

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 2.16.1 版本之前，多用户 API 服务器将共享或全局流水线所使用的空命名空间视为修改和删除操作的授权例外。已认证的用户可在无需相应 Kubernetes RBAC 权限的情况下，修改或删除共享流水线的定义及版本，从而破坏其完整性与可用性。对共享流水线的只读访问是有意为之；单用户部署会刻意绕过多用户检查；而修改后流水线的执行则是条件性的下游后果。本安全公告不包含针对共享流水线多部分上传授权路径的修复，该路径亦未通过 2.

CVSS 7.2 · High

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-88984

Vulnerability Information
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Vulnerability Title
Kubeflow Pipelines: RBAC bypass on shared pipelines allows any authenticated user to delete or modify global pipelines
Source: CVE Program / CVE List V5
Vulnerability Description
Kubeflow Pipelines enables users to build and deploy portable, scalable machine learning workflows. Prior to 2.16.1, the multi-user API server treats the empty namespace used by shared or global pipelines as an authorization exception for modification and deletion operations. An authenticated user can modify or delete shared pipeline definitions and versions without the required Kubernetes RBAC permissions, compromising their integrity and availability. Read-only access to shared pipelines remains intentional, single-user deployments intentionally bypass multi-user checks, and execution of a modified pipeline is a conditional downstream consequence. The separate shared-pipeline multipart upload authorization path is outside this advisory and is not remediated by version 2.16.1. This issue is fixed in version 2.16.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
kubeflow pipelines < 2.16.1 -

II. Public POCs for CVE-2026-88984

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III. Intelligence Information for CVE-2026-88984

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Other References for CVE-2026-88984 (4)

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-2026-88985 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-285