Kubeflow: Unauthenticated path traversal to arbitrary file read on ml-pipeline-ui via the volume artifact source
Impact
Kubeflow Pipelines versions prior to 2.18.0 have a path traversal weakness, allowing unauthenticated access to read files outside a selected volume via the ml-pipeline-ui. A caller must be able to reach the route and identify an existing mounted volume. The impact depends on the deployment's authentication settings.
Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.A deployment with authentication disabled requires no application credentials; in multi-user deployments, the caller ordinarily must be authorized for the supplied namespace.
Affected packages
Affected products
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kubeflow · GitHub_M
pipelines
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kubeflow · GitHub_M
pipelines
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affected
< 2.18.0
Other versions: unknown
Original source description
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.
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Evidence available
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Original records
CVE-2026-118758View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.
cve.new JSON →Underlying weaknesses
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Contributing organizations · 2
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What changed
Follow changes- CVE · CVE-2026-118758
Observed 2026-10-29T21:08:03.114Z · upstream updated 2026-10-29T20:18:30.607Z
Prioritization updated
before
[]
after
[ { "source": "CISA-ADP", "type": "SSVC", "role": "CISA Coordinator", "timestamp": "2026-10-29T20:18:21.704175Z", "decisions": [ { "name": "Exploitation", "value": "none" }, { "name": "Automatable", "value": "yes" }, { "name": "Technical Impact", "value": "partial" } ] } ]
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