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Back to active CVEs
High · CVSS 8.6CVE-2026-88980

Kubeflow Pipelines: Unauthenticated server-side request forgery in the frontend http/https artifact source via decimal-IP bypass of the bucket validatorCVE-2026-88980

Answer in brief

CVE-2026-88980 records a High severity (CVSS 8.6) vulnerability in Kubeflow Pipelines: Unauthenticated server-side request forgery in the frontend http/https artifact source via decimal-IP bypass of the bucket validator. The current sources do not mark it as known exploited. The current feed maps kubeflow/pipelines (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 5, 2026Updated Nov 5, 2026Source checked Nov 5, 2026First seen by HOL Nov 5, 2026Material review Nov 5, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.6
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 8.6. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps kubeflow/pipelines (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
kubeflow/pipelinesgeneric<2.18.02.18.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for kubeflow/pipelines.
  2. 2Review the reported fix. Update kubeflow/pipelines to 2.18.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Nov 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 5, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

Kubeflow Pipelines enables users to build and deploy portable, scalable machine learning workflows. Prior to 2.18.0, the frontend GET /artifacts/get route accepts source=http or source=https with caller-controlled bucket and key values, and isAllowedResourceName permits an all-digit decimal host that the URL parser converts to an IPv4 address. The default ALLOWED_ARTIFACT_DOMAIN_REGEX and authorization-disabled standalone configuration allow an unauthenticated caller to fetch internal HTTP resources and receive their response body. In the authenticated multi-user configuration, the same destination-validation defect is reachable by a low-privilege tenant with a valid identity and authorized namespace. Cloud credential disclosure depends on reachable metadata services and attached roles, and the issue does not establish IMDSv2 bypass or credential access when metadata is blocked. This issue is fixed in version 2.18.0.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Kubeflow Pipelines API server lacks authorization for shared pipeline uploadsSame kubeflow/pipelines package
  • Kubeflow Pipelines: Unauthenticated SSRF vulnerability in Kubeflow Pipelines TensorBoard proxySame kubeflow/pipelines package
  • Kubeflow Pipelines: Unauthenticated SSRF through artifact provider endpointsSame kubeflow/pipelines package
  • Kubeflow Pipelines: Cross-tenant execution-cache poisoning / output substitution via a namespace-blind cache key in the cache webhook (multi-user)Same kubeflow/pipelines package
  • Kubeflow Pipelines — API server fetches a caller-supplied pipelineURL without host validationSame kubeflow/pipelines package
  • Kubeflow Pipelines: RBAC bypass on shared pipelines allows any authenticated user to delete or modify global pipelinesSame kubeflow/pipelines package

Record context

Vulnerability class
SSRF
EPSS
Not reported
CWE IDs
CWE-918
Source
CVE List V5
Source checked
Nov 5, 2026
References
4 linked sources
Open source record