---
id: CVE-2026-88981
title: 'Kubeflow Pipelines: Unauthenticated SSRF through artifact provider endpoints'
summary: >-
  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…
severity: high
cvss: 8.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-918
vendor: kubeflow
product: pipelines
affected:
  - pipelines < 2.18.0
published: '2026-11-05'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T22:21:30.033Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-88981'
references:
  - url: >-
      https://github.com/kubeflow/pipelines/security/advisories/GHSA-3pcj-8j5w-jmxq
    label: >-
      https://github.com/kubeflow/pipelines/security/advisories/GHSA-3pcj-8j5w-jmxq
  - url: 'https://github.com/kubeflow/pipelines/pull/14349'
    label: 'https://github.com/kubeflow/pipelines/pull/14349'
  - url: >-
      https://github.com/kubeflow/pipelines/commit/0b77f9b07bfb9860dc90106003bbc3e2fe0e0965
    label: >-
      https://github.com/kubeflow/pipelines/commit/0b77f9b07bfb9860dc90106003bbc3e2fe0e0965
  - url: 'https://github.com/kubeflow/pipelines/releases/tag/2.18.0'
    label: 'https://github.com/kubeflow/pipelines/releases/tag/2.18.0'
tags:
  - cve.org
ingestedAt: '2026-11-05T23:41:31.946Z'
---

## Overview

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.

## Affected

- `pipelines < 2.18.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.