# CVE-2026-88986: Kubeflow Pipelines: Reflected XSS in the frontend pod information and events error responses

Status: published. Published: 2026-11-05. Updated: 2026-11-05.

Kubeflow Pipelines enables users to build and deploy portable, scalable machine learning workflows. Prior to 2.15.0, the frontend routes /pipeline/k8s/pod and /pipeline/k8s/pod/events use frontend/server/k8s-helper.ts to include untrusted podname and podnamespace query values and backend error details in HTML-capable error responses. An unauthenticated attacker can craft a link that executes JavaScript in the frontend origin when a user who satisfies the deployment's authentication and route-access requirements follows it and reaches an affected response. Cookie disclosure depends on cookie attributes, and server-side code execution or availability impact is not established. This issue is fixed in version 2.15.0.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- kubeflow / pipelines: < 2.15.0 (affected). Source: CNA: GitHub_M

## Severity and prioritization

- CVSS 3.1: 6.1 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N; source: CNA: GitHub_M

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-79

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/kubeflow/pipelines/security/advisories/GHSA-g3qx-frcg-j979 (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/kubeflow/pipelines/pull/12295 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/kubeflow/pipelines/commit/fedc25e3f7251933d4a37b964bc3e8176beea28e (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/kubeflow/pipelines/releases/tag/2.15.0 (CNA: GitHub_M; x_refsource_MISC)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-88986; retrieved 2026-11-05; source updated 2026-11-05

Revision: 89dd3f4a951d421a7193a6f84c45bc8a41dba1b1d7636f033ae656b189993687

Canonical: https://y2.dev/cve/CVE-2026-88986

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