CVE-2026-88983
Kubeflow Pipelines — API server fetches a caller-supplied pipelineURL without host validation
What happened?
Kubeflow Pipelines enables users to build and deploy portable, scalable machine learning workflows. Prior to 2.17.0, the API server's pipeline and pipeline-version creation paths fetch a caller-supplied pipelineURL without restricting the destination. An authenticated caller with permission to create a pipeline or pipeline version can make requests from the API server to internal services and observe a limited status-code oracle. Arbitrary response-body disclosure, credential theft, and integrity or availability impact are not established. This issue is fixed in version 2.17.0.
Affected software and versions
| Software | Version information | Fixed version |
|---|---|---|
| pipelineskubeflow | affected: < 2.17.0 | See vendor advisory |
Version information comes from the source record and can include unaffected products and exceptions. Distribution packages may contain backported fixes: an older upstream version alone does not prove a server is affected.
Is it being exploited?
This CVE was not listed in the CISA catalogue at our last retrieval. This does not establish that exploitation is absent.
How to respond
- Confirm the product, installed package version, and any configuration requirements in the vendor advisory.
- Follow the vendor’s remediation or workaround guidance in the references below. Structured fixed-version data is unavailable here; the publisher’s description may include a fix or workaround.
- Restart affected services if required, then verify the running version. Known exploitation may warrant investigation as well as patching.
Sources and remediation references
- https://www.cve.org/CVERecord?id=CVE-2026-88983
- https://github.com/kubeflow/pipelines/security/advisories/GHSA-f7vj-6669-qvv4
- https://github.com/kubeflow/pipelines/pull/12750
- https://github.com/kubeflow/pipelines/commit/504d7797c1e061327ddb2bcb8bc1c5dd4940cfc3
- https://github.com/kubeflow/pipelines/releases/tag/2.17.0