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TI-2026-85698 Aliases CVE-2026-88981

Server-side request forgery in Kubeflow Pipelines artifact endpoints

Priority MEDIUM 43CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-918 and the CVSS impact.

Summary

Kubeflow Pipelines before 2.18.0 accepts attacker-chosen storage endpoints in artifact download and archived pod-log requests, enabling server-side request forgery (CWE-918). In the standalone configuration with authorization disabled, an unauthenticated remote attacker can make the shared ml-pipeline-ui pod connect to arbitrary reachable hosts and return response data. Requests signed with configured object-store credentials may also reveal an access-key identifier.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00277 20th percentileScored 2026-11-07
Fix Fixed pipelines (kubeflow): 2.18.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
kubeflowpipelinesbefore 2.18.02.18.0Patch availableCNA
  • pipelines Vendorkubeflow Affected before 2.18.0 Fixed in 2.18.0 Patch available CNA

Remediation

Upgrade Kubeflow Pipelines to version 2.18.0.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

  • Fix · CNA pipelines (kubeflow) Fixed in 2.18.0

Timeline

  1. 2026-11-05 Threatist record created from CVE-2026-88981
  2. 2026-11-06 CISA SSVC decision points changed

References

Other 4

  • TI-2026-39556 Improper access control in kubeflow pipelines CVSS 3.1CRITICAL 10.0
  • TI-2024-05160 ReDoS in kubeflow/kubeflow CVSS 3.1HIGH 7.5
  • TI-2026-34822 Kubeflow Community Distribution: Overly Permissive Istio Permissions Allows Kubeflow Authorization Token Stealing CVSS 3.1HIGH 8.0
  • TI-2026-85696 Server-side request forgery in Kubeflow Pipelines TensorBoard proxy CVSS 3.1MEDIUM 5.8
  • TI-2026-73437 Server-side request forgery in Kubeflow Model Registry leaks tokens CVSS 4.0HIGH 7.1
  • TI-2026-85695 Kubeflow Pipelines API server skips authorization for shared pipeline uploads CVSS 3.1CRITICAL 9.6
See all 19 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences