# CVE-2026-88986: Kubeflow Pipelines reflected XSS in pod query endpoints

Source: https://junglewise.ai/threats/cve-2026-88986-kubeflow-pipelines-enables-users-to-build-and-deploy-portable  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-05. Updated: 2026-11-05  
License: CC BY 4.0 with a link back

CVE-2026-88986 · Severity: medium · CVSS 6.1 · Published 2026-11-05

Kubeflow Pipelines is a machine learning workflow management system used to build and deploy scalable ML pipelines. The frontend endpoints for viewing pod information and logs fail to sanitize user-supplied query parameters, allowing an attacker to inject and execute arbitrary JavaScript in a user's browser. A malicious link could steal session cookies or perform actions on behalf of an authenticated user.

Technologies: [github.com/kubeflow/pipelines (Go)](https://junglewise.ai/threats/technologies/github-com-kubeflow-pipelines), [Kubeflow Pipelines](https://junglewise.ai/threats/technologies/kubeflow-pipelines). Vendors: [Go](https://junglewise.ai/threats/vendors/go), [Kubeflow](https://junglewise.ai/threats/vendors/kubeflow).

## Quick answers

**Is CVE-2026-88986 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-88986 being exploited in the wild.

**How severe is CVE-2026-88986?** Medium severity, with a CVSS score of 6.1, published 5 November 2026.

**Which products and versions are affected?** github.com/kubeflow/pipelines (Go) < 0.0.0-20251010122814-fedc25e3f725, SEMVER:introduced=0,fixed=0.0.0-20251010122814-fedc25e3f725; Kubeflow Pipelines before 2.15.0.

**Is there a fix for CVE-2026-88986?** Yes. github.com/kubeflow/pipelines (Go): upgrade to 0.0.0-20251010122814-fedc25e3f725 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-88986 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-88986?** Check whether you run github.com/kubeflow/pipelines (Go) or Kubeflow Pipelines at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- github.com/kubeflow/pipelines (Go): upgrade to 0.0.0-20251010122814-fedc25e3f725 or later

  ```sh
  go get github.com/kubeflow/pipelines@v0.0.0-20251010122814-fedc25e3f725
  ```


## Technical details

Reflected XSS vulnerability in frontend routes /pipeline/k8s/pod and /pipeline/k8s/pod/events due to unsanitized podname and podnamespace query parameters being included in HTML-capable error responses. An unauthenticated attacker can craft a malicious link containing script payloads that executes in the frontend origin when clicked by a user with deployment authentication and route access. Cookie disclosure risk depends on cookie attributes; no server-side code execution or availability impact established.

## Affected products

- Kubeflow Pipelines before 2.15.0

## Identifiers

- CVE-2026-88986
- GHSA-g3qx-frcg-j979

## Timeline

- 2026-11-05: disclosed

## References

- [https://github.com/kubeflow/pipelines/commit/fedc25e3f7251933d4a37b964bc3e8176beea28e](https://github.com/kubeflow/pipelines/commit/fedc25e3f7251933d4a37b964bc3e8176beea28e)
- [https://github.com/kubeflow/pipelines/pull/12295](https://github.com/kubeflow/pipelines/pull/12295)

## Related threats

- [Kubeflow Pipelines authorization bypass in shared pipelines](https://junglewise.ai/threats/cve-2026-88984-kubeflow-pipelines-enables-users-to-build-and-deploy-portable)
- [Kubeflow Pipelines cross-tenant cache isolation in execution cache](https://junglewise.ai/threats/cve-2026-88982-kubeflow-pipelines-enables-users-to-build-and-deploy-portable)
- [Kubeflow Pipelines arbitrary endpoint connection in artifact download](https://junglewise.ai/threats/cve-2026-88981-kubeflow-pipelines-enables-users-to-build-and-deploy-portable)
- [Kubeflow Pipelines authorization bypass in pipeline upload](https://junglewise.ai/threats/cve-2026-77596-kubeflow-pipelines-enables-users-to-build-and-deploy-portable)
- [Kubeflow Pipelines SQL injection in pageToken parameter](https://junglewise.ai/threats/cve-2026-88985-kubeflow-pipelines-enables-users-to-build-and-deploy-portable)