---
id: CVE-2026-118758
title: >-
  Kubeflow: Unauthenticated path traversal to arbitrary file read on
  ml-pipeline-ui via the volume artifact source
summary: >-
  Kubeflow Pipelines enables users to build and deploy portable, scalable
  machine learning workflows. Prior to 2.18.0, the volume artifact handler for
  GET /artifacts/get?source=volume did not confine a caller-supplied file path
  to the sele…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-22
vendor: kubeflow
product: pipelines
affected:
  - pipelines < 2.18.0
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-29T20:18:21.704175Z'
published: '2026-10-29'
updated: '2026-10-29'
sourceUpdated: '2026-10-29T20:18:30.607Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-118758'
references:
  - url: >-
      https://github.com/kubeflow/pipelines/security/advisories/GHSA-2fg9-fx2f-439r
    label: >-
      https://github.com/kubeflow/pipelines/security/advisories/GHSA-2fg9-fx2f-439r
  - url: 'https://github.com/kubeflow/pipelines/pull/13677'
    label: 'https://github.com/kubeflow/pipelines/pull/13677'
  - url: >-
      https://github.com/kubeflow/pipelines/commit/4d9bc5ab12b67efedb3923ef428a399cb445cf5f
    label: >-
      https://github.com/kubeflow/pipelines/commit/4d9bc5ab12b67efedb3923ef428a399cb445cf5f
  - url: >-
      https://github.com/kubeflow/pipelines/blob/2.18.0/docs/operator-guides/upgrade-2.18.md#custom-storage-configuration-and-rollout
    label: >-
      https://github.com/kubeflow/pipelines/blob/2.18.0/docs/operator-guides/upgrade-2.18.md#custom-storage-configuration-and-rollout
  - 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
epss: 0.00525
epssPercentile: 0.44518
ingestedAt: '2026-11-02T21:30:04.847Z'
---

## Overview

Kubeflow Pipelines enables users to build and deploy portable, scalable machine learning workflows. Prior to 2.18.0, the volume artifact handler for GET /artifacts/get?source=volume did not confine a caller-supplied file path to the selected volume. A caller who can reach the route and identify an existing mounted volume can use path traversal to read files outside that volume when the artifact-serving process can read them. The frontend pod serves the request when artifact proxying is disabled, while the selected namespace's artifact-service pod serves it when proxying is enabled. A deployment with authentication disabled requires no application credentials; in multi-user deployments, the caller ordinarily must be authorized for the supplied 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.