Description
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.
Published: 2026-03-11
Score: 9.8 Critical
EPSS: < 1% Very Low
KEV: No
Impact: Sensitive Data Exposure
Action: Immediate Patch
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-56px-hm34-xqj5 Unauthorized access to Argo Workflows Template
History

Fri, 20 Mar 2026 14:15:00 +0000

Type Values Removed Values Added
First Time appeared Argoproj argo Workflows
CPEs cpe:2.3:a:argoproj:argo_workflows:*:*:*:*:*:go:*:*
Vendors & Products Argoproj argo Workflows

Fri, 13 Mar 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-306
References
Metrics threat_severity

None

threat_severity

Important


Thu, 12 Mar 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Argoproj
Argoproj argo-workflows
Vendors & Products Argoproj
Argoproj argo-workflows

Wed, 11 Mar 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 11 Mar 2026 16:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Argo Workflows has unauthorized access to Argo Workflows Template
Weaknesses CWE-863
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Subscriptions

Argoproj Argo-workflows Argo Workflows
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-11T17:33:15.219Z

Reserved: 2026-02-25T15:28:40.651Z

Link: CVE-2026-28229

cve-icon Vulnrichment

Updated: 2026-03-11T17:33:04.105Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-11T16:16:40.477

Modified: 2026-03-20T14:27:59.017

Link: CVE-2026-28229

cve-icon Redhat

Severity : Important

Publid Date: 2026-03-11T15:37:47Z

Links: CVE-2026-28229 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-03-23T09:55:27Z

Weaknesses