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Vulnerabilities

Security fix · CVE-2026-118761

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

Published Oct 30, 2026 · catalog updated Nov 5, 2026 · Kubeflow Pipelines: Pipeline archive

Last checked Nov 6, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-118761. EPSS is 0.50%. Act only if a listed version of Kubeflow Pipelines: Pipeline archive is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Kubeflow Pipelines: Pipeline archive).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.50%
Remediation
Version ranges on file
Affected products
Go github.com/kubeflow/pipelines · go github.com/kubeflow/pipelines · golang github.com

## Summary The Kubeflow Pipelines API server decompresses uploaded pipeline archives without adequately bounding expanded data in affected versions. A small ZIP or gzip-compressed tar archive can consume disproportionately large amounts of memory while the server locates or reads the pipeline file, potentially exhausting API-server resources and interrupting service. Multipart pipeline and pipeline-version upload processing decompresses the archive before namespace authorization, so a caller who can reach those endpoints does not need a successful pipeline-create authorization decision to trigger the issue. External authentication and network controls can restrict reachability. URL-import handlers authorize before fetching and decompressing a remote archive. The amount of expansion needed to exhaust memory depends on deployment resource limits and concurrent activity; no particular archive is guaranteed to crash every deployment. ## Remediation Upgrade the API server to **[Kubeflow Pipelines 2.18.0](https://github.com/kubeflow/pipelines/releases/tag/2.18.0)**. Versions through 2.17.3 are affected; the first affected release has not been established. [PR #14171](https://github.com/kubeflow/pipelines/pull/14171) bounds compressed input and extracted pipeline data. [PR #14186](https://github.com/kubeflow/pipelines/pull/14186) strengthens the total tar traversal budget, including metadata and skipped entries. The 2.18 release also includes configurable upload and specification limits; operators should review the shipped settings and resource budget. These controls address pipeline archive amplification and do not establish general HTTP-body, temporary-disk, concurrency, or CPU limits. Until upgrading, restrict access to upload and import endpoints and apply deployment-level request and resource controls. A compressed upload-size limit alone does not prevent decompression amplification. Regression tests cover compressed input, selected-entry boundaries, and tar traversal

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Go github.com/kubeflow/pipelines0 → 0.0.0-20260831164314-ba9ae72cc860
  • Go github.com/kubeflow/pipelines1.7.0-alpha.3
  • go github.com/kubeflow/pipelines< 0.0.0-20260831164314-ba9ae72cc860
  • go github.com/kubeflow/pipelines<0.0.0-20260831164314-ba9ae72cc860||=1.7.0-alpha.3
  • go github.com/kubeflow/pipelines= 1.7.0-alpha.3
  • golang github.comversion unspecified

How to fix CVE-2026-118761

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-118761. EPSS is 0.50%. Act only if a listed version of Kubeflow Pipelines: Pipeline archive is installed.

Which versions are affected?

Compare what you have installed with 0 → 0.0.0-20260831164314-ba9ae72cc860, 1.7.0-alpha.3, < 0.0.0-20260831164314-ba9ae72cc860, <0.0.0-20260831164314-ba9ae72cc860||=1.7.0-alpha.3, = 1.7.0-alpha.3. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-409. EPSS 0.50%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 30, 2026 · GitHub Advisory Database

    Detected

    ## Summary The Kubeflow Pipelines API server decompresses uploaded pipeline archives without adequately bounding expanded data in affected versions. A small ZIP or gzip-compressed tar archive can consume disproportionately large amounts of memory while the server locates or reads the pipeline file, potentially exhausting API-server resources and interrupting service. Multipart pipeline and pipelin

  2. Oct 30, 2026 · GitHub Advisory Database

    Fix available

    github.com/kubeflow/pipelines fixed in 0.0.0-20260831164314-ba9ae72cc860

  3. Oct 30, 2026 · GitHub Advisory Database

    Fix available

    github.com/kubeflow/pipelines fixed in 0.0.0-20260831164314-ba9ae72cc860

  4. Oct 30, 2026 · GitHub Advisory Database

    Updated

    ## Summary The Kubeflow Pipelines API server decompresses uploaded pipeline archives without adequately bounding expanded data in affected versions. A small ZIP or gzip-compressed tar archive can consume disproportionately large amounts of memory while the server locates or reads the pipeline file, potentially exhausting API-server resources and interrupting service. Multipart pipeline and pipelin

  5. Nov 5, 2026 · Go Vulnerability Database

    Updated

    ## Summary The Kubeflow Pipelines API server decompresses uploaded pipeline archives without adequately bounding expanded data in affected versions. A small ZIP or gzip-compressed tar archive can consume disproportionately large amounts of memory while the server locates or reads the pipeline file, potentially exhausting API-server resources and interrupting service. Multipart pipeline and pipelin

Sources

  • CVE.orgVulnerability recordCVE-2026-118761

    Official CVE identifier

    cve.org
  • GitHub Advisory DatabasePackage advisoryGHSA-8fmv-6rg5-5924

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

    github.com
  • GitLab Advisory DatabasePackage advisoryCVE-2026-118761

    The Kubeflow Pipelines API server decompresses uploaded pipeline archives without adequately bounding expanded data in affected versions. A small ZIP or gzip-compressed tar archive can consume disproportionately large amounts of memory while the server locates or reads the pipeline file, potentially exhausting API-server resources and interrupting service. Multipart pipeline and pipeline-version u

    advisories.gitlab.com
  • GitLab Advisory DatabasePackage advisorygo/github.com/kubeflow/pipelines/CVE-2026-118761.yml

    The Kubeflow Pipelines API server decompresses uploaded pipeline archives + without adequately bounding expanded data in affected versions. A small ZIP or gzip-compressed + tar archive can consume disproportionately large amounts of memory while the server + locates or reads the pipeline file, potentially exhausting API-server resources + and interrupting service.\n\nMultipart pipeline and pipelin

    gitlab.com
  • Go Vulnerability DatabasePackage advisoryGHSA-8fmv-6rg5-5924

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

    osv.dev
  • OpenSSF OSV / OSV ScannerPackage advisoryGHSA-8fmv-6rg5-5924

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

    osv.dev

References

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • Go Vulnerability DatabaseNov 6, 2026
  • GitHub Advisory DatabaseNov 6, 2026
  • GitLab Advisory DatabaseNov 3, 2026
  • OpenSSF OSV / OSV ScannerNov 2, 2026
  • GitLab Advisory DatabaseNov 1, 2026
  • CVE.orgOct 31, 2026