Path Traversal in Kubeflow Pipelines
CVE-2026-118758
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Kubeflow Pipelines — versions < 2.18.0
Weakness classification (CWE)
References
- github.com/kubeflow/pipelines/security/advisories/GHSA-2fg9-fx2f-439r
- github.com/kubeflow/pipelines/pull/13677
- github.com/kubeflow/pipelines/commit/4d9bc5ab12b67efedb3923ef428a399cb445cf5f
- github.com/kubeflow/pipelines/blob/2.18.0/docs/operator-guides/upgrade-2.18.md
- github.com/kubeflow/pipelines/releases/tag/2.18.0
Frequently asked questions
- What is CVE-2026-118758?
- CVE-2026-118758 is a high-severity vulnerability in Kubeflow Pipelines, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-10-29.
- How severe is CVE-2026-118758?
- High severity. CVSS v3 base score is 7.5 out of 10.