# Kubeflow Pipelines: Pipeline archive upload allows decompression bomb to exhaust server memory

Advisory record · `GHSA-8fmv-6rg5-5924`

- **Identifiers:** `GHSA-8fmv-6rg5-5924` · `CVE-2026-118761` · `GO-2026-6899`
- **State:** Confirmed
- **Severity:** CVSS 7.5 High
- **Critical:** No
- **Weakness (CWE):** [CWE-409](https://cwe.mitre.org/data/definitions/409.html)
- **Tags:** [CWE-409](https://agentprime.io/advisories/tag/cwe-409.md)
- **Published:** 30 Oct 2026
- **Updated:** 5 Nov 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 30 Oct 2026, 23:13 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `github.com/kubeflow/pipelines` (Go): affected `<0.0.0-20260831164314-ba9ae72cc860 || =1.7.0-alpha.3`; fixed in `0.0.0-20260831164314-ba9ae72cc860`

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> Kubeflow Pipelines (Go module github.com/kubeflow/pipelines) versions through 0.0.0-20260831164314-ba9ae72cc860 are affected. A caller who can reach the multipart pipeline or pipeline-version upload endpoints can send a small compressed archive that expands to a large amount of data, exhausting API-server memory and interrupting service; the decompression happens before namespace authorization, so no create permission is needed. Upgrade to 0.0.0-20260831164314-ba9ae72cc860 or later. Until then, restrict access to upload and import endpoints.

Written 1 Nov 2026.

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 7.5 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0050, the 42nd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:11 UTC: First seen by agentprime
- 31 Oct 2026, 14:11 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-8fmv-6rg5-5924)

## Sources

- [GitHub Advisory Database: GHSA-8fmv-6rg5-5924](https://github.com/advisories/GHSA-8fmv-6rg5-5924)
- [OSV: GHSA-8fmv-6rg5-5924](https://osv.dev/vulnerability/GHSA-8fmv-6rg5-5924)
- <https://github.com/kubeflow/pipelines/security/advisories/GHSA-8fmv-6rg5-5924>
- <https://nvd.nist.gov/vuln/detail/CVE-2026-118761>
- <https://github.com/kubeflow/pipelines/pull/14171>
- <https://github.com/kubeflow/pipelines/pull/14186>
- <https://github.com/kubeflow/pipelines/commit/1121d9a081fdf9e2107c39abb2cd8947727c6953>
- <https://github.com/kubeflow/pipelines/commit/ba9ae72cc860e3afbea232185e4132fc2896cac5>
- <https://github.com/kubeflow/pipelines>
- <https://github.com/kubeflow/pipelines/releases/tag/2.18.0>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-8fmv-6rg5-5924>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-8fmv-6rg5-5924/>. Everything for agents: <https://agentprime.io/llms.txt>.