Critical 9.8Published Mar 11, 2026

CVE-2026-28229Argo Workflows has unauthorized access to Argo Workflows Template

Updated under an hour ago (Oct 26, 2026, 1:23 PM ET)

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It affects argoproj argo-workflows and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for argoproj argo-workflows

Exploited in the last 30 days

Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. Prior to 4.0.2 and 3.7.11, Workflow templates endpoints allow any client to retrieve WorkflowTemplates (and ClusterWorkflowTemplates). Any request with a Authorization: Bearer nothing token can leak sensitive template content, including embedded Secret manifests. This vulnerability is fixed in 4.0.2 and 3.7.11.

CVSS: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-863, CWE-306
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Modified
Record last updated: Jul 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

argoproj argo-workflows argoproj:argo_workflows (from the name)	from 4.0.0, < 4.0.2; before 3.7.11	CNA record
Red Hat Red Hat OpenShift AI 2.25 redhat:openshift_ai	from 1776740558 not affected	CISA ADP
argoproj argo_workflows argoproj:argo_workflows	from 3.7.0 before 3.7.11; from 4.0.0 before 4.0.2	NVD

References

References

https://github.com/argoproj/argo-workflows/security/advisories/GHSA-56px-hm34-xqj5	x-refsource-confirm, exploit, vendor-advisory
https://access.redhat.com/errata/RHSA-2026:10184
https://access.redhat.com/security/cve/CVE-2026-28229
https://bugzilla.redhat.com/show_bug.cgi?id=2446549
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-28229.json

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.