CVE-2026-28229

Argo Workflows has unauthorized access to Argo Workflows Template

Published Mar 11, 2026 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-56px-hm34-xqj5 Unauthorized access to Argo Workflows Template
History
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
Type Values Removed Values Added
First Time appeared Argoproj
Argoproj argo-workflows
Vendors & Products Argoproj
Argoproj argo-workflows
Type Values Removed Values Added
Metrics ssvc

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

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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jul 15, 2026, 1:11 AM
Reserved
Feb 25, 2026, 3:28 PM
Status
Modified
Published
Mar 11, 2026, 4:16 PM
Modified
Jul 15, 2026, 2:19 AM
Severity
Important
Public date
Mar 11, 2026, 3:37 PM