Kubeflow Pipelines enables users to build and deploy portable, scalable machine learning workflows. Prior to 2.18.0, the legacy V1/raw-Argo execution cache mutating webhook and cache-server storage path hash selected template fields without the Kubernetes namespace, use the key alone for lookups and duplicate checks, and trust the mutable pipelines.kubeflow.org/execution_cache_key annotation when publishing outputs. In multi-user deployments where tenant namespaces share the cache service, a tenant with workload-submission privileges can read another namespace's cached outputs or seed matching outputs that are substituted into a later step. Standard KFP V2 component pods bypass this cache, matching requires the selected template fields and staleness policy, and arbitrary code execution or service availability impact is not established. This issue is fixed in version 2.18.0.
History

Thu, 12 Nov 2026 01:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 06 Nov 2026 12:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-524
References
Metrics threat_severity

None

threat_severity

Moderate


Fri, 06 Nov 2026 00:00:00 +0000

Type Values Removed Values Added
First Time appeared Kubeflow
Kubeflow pipelines
Vendors & Products Kubeflow
Kubeflow pipelines

Thu, 05 Nov 2026 22:45:00 +0000

Type Values Removed Values Added
Description Kubeflow Pipelines enables users to build and deploy portable, scalable machine learning workflows. Prior to 2.18.0, the legacy V1/raw-Argo execution cache mutating webhook and cache-server storage path hash selected template fields without the Kubernetes namespace, use the key alone for lookups and duplicate checks, and trust the mutable pipelines.kubeflow.org/execution_cache_key annotation when publishing outputs. In multi-user deployments where tenant namespaces share the cache service, a tenant with workload-submission privileges can read another namespace's cached outputs or seed matching outputs that are substituted into a later step. Standard KFP V2 component pods bypass this cache, matching requires the selected template fields and staleness policy, and arbitrary code execution or service availability impact is not established. This issue is fixed in version 2.18.0.
Title Kubeflow Pipelines: Cross-tenant execution-cache poisoning / output substitution via a namespace-blind cache key in the cache webhook (multi-user)
Weaknesses CWE-345
CWE-639
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-11-05T22:25:58.995Z

Updated: 2026-11-10T04:44:31.733Z

Reserved: 2026-09-10T16:02:31.342Z

Link: CVE-2026-88982

cve-icon Vulnrichment

Updated: 2026-11-10T04:44:26.866Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-05T23:17:01.600

Modified: 2026-11-10T05:18:12.427

Link: CVE-2026-88982

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-11-05T22:25:58Z

Links: CVE-2026-88982 - Bugzilla