Vulnerability · Published Oct 29, 2026 · Assigned by GitHub_M

CVE-2026-118759Kubeflow Pipelines: Run log streaming endpoint bypasses namespace authorization, exposing pod execution logs cross-tenant

High 7.5

In plain English

A high-severity information exposure 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 27% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.3%top 72.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

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 API server's GET /apis/v1alpha1/runs/{run_id}/nodes/{node_id}/log handler retrieved logs without authorizing the caller against the selected run. A caller who can reach the backend and knows a victim run ID and suitable pod or node identifier can read live or archived logs with the API server's permissions. For live logs, the caller-controlled node ID was also accepted as a pod name without verifying that the pod belonged to the requested run, allowing a known run ID to select the namespace of an unrelated pod and read its main container logs. The handler does not authenticate requests itself, although an external authentication gate or network policy can limit reachability. Exposed logs can contain sensitive workload data or credentials. This issue is fixed in version 2.18.0.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/kubeflow/pipelines	0.0.0-20260904182349-be4723e33727	GHSA-wg5q-x4j9-qm54
Go	github.com/kubeflow/pipelines	no fix listed	GHSA-wg5q-x4j9-qm54
Go	github.com/kubeflow/pipelines	0.0.0-20260904182349-be4723e33727	GO-2026-6900

Affected products (as reported)

Vendor	Product	Versions
kubeflow	pipelines	< 2.18.0

Weakness: CWE-200, CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

https://github.com/kubeflow/pipelines/security/advisories/GHSA-wg5q-x4j9-qm54 x_refsource_CONFIRM
https://github.com/kubeflow/pipelines/pull/13684 x_refsource_MISC
https://github.com/kubeflow/pipelines/commit/be4723e33727c6dad71a95cba61e8f61562ab20f x_refsource_MISC
https://github.com/kubeflow/pipelines/releases/tag/2.18.0 x_refsource_MISC