Vulnerability · Published Nov 5, 2026 · Assigned by GitHub_M

CVE-2026-88981Kubeflow Pipelines: Unauthenticated SSRF through artifact provider endpoints

High 8.6

In plain English

A high-severity server-side request forgery in pipelines from kubeflow. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).

Severity (CVSS 3.1)8.6High

Exploit odds (30 days)0.3%top 79.8% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

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 products (as reported)

Vendor	Product	Versions
kubeflow	pipelines	< 2.18.0

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

References

https://github.com/kubeflow/pipelines/security/advisories/GHSA-3pcj-8j5w-jmxq x_refsource_CONFIRM
https://github.com/kubeflow/pipelines/pull/14349 x_refsource_MISC
https://github.com/kubeflow/pipelines/commit/0b77f9b07bfb9860dc90106003bbc3e2fe0e0965 x_refsource_MISC
https://github.com/kubeflow/pipelines/releases/tag/2.18.0 x_refsource_MISC