Vulnerability · Published Oct 29, 2026 · Assigned by GitHub_M

CVE-2026-118761Kubeflow Pipelines: Pipeline archive upload allows decompression bomb to exhaust server memory

High 7.5

In plain English

A high-severity security flaw in pipelines from kubeflow. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.5%top 57.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Kubeflow Pipelines enables users to build and deploy portable, scalable machine learning workflows. Prior to 2.18.0, the API server decompressed uploaded pipeline archives without adequately bounding expanded data while locating or reading the pipeline file. A small ZIP or gzip-compressed tar archive can consume disproportionately large memory and exhaust API-server resources. Multipart pipeline and pipeline-version upload processing performs decompression before namespace authorization, so a reachable caller does not need a successful pipeline-create authorization decision. URL-import handlers authorize before fetching and decompressing a remote archive. The amount of expansion required to interrupt service depends on deployment resource limits and concurrent activity, and no specific archive is guaranteed to crash every deployment. This issue is fixed in version 2.18.0.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/kubeflow/pipelines	0.0.0-20260831164314-ba9ae72cc860	GHSA-8fmv-6rg5-5924
Go	github.com/kubeflow/pipelines	no fix listed	GHSA-8fmv-6rg5-5924
Go	github.com/kubeflow/pipelines	0.0.0-20260831164314-ba9ae72cc860	GO-2026-6899

Affected products (as reported)

Vendor	Product	Versions
kubeflow	pipelines	< 2.18.0

Weakness: CWE-409 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

https://github.com/kubeflow/pipelines/security/advisories/GHSA-8fmv-6rg5-5924 x_refsource_CONFIRM
https://github.com/kubeflow/pipelines/pull/14171 x_refsource_MISC
https://github.com/kubeflow/pipelines/pull/14186 x_refsource_MISC
https://github.com/kubeflow/pipelines/commit/1121d9a081fdf9e2107c39abb2cd8947727c6953 x_refsource_MISC
https://github.com/kubeflow/pipelines/commit/ba9ae72cc860e3afbea232185e4132fc2896cac5 x_refsource_MISC
https://github.com/kubeflow/pipelines/releases/tag/2.18.0 x_refsource_MISC