CVE-2026-28229
Critical
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.
SeverityCritical
CVSS9.8
Exploit probability—
ProductArgoproj Argo Workflows
PublishedMar 11, 2026
First seenMar 11, 2026
Weakness typeCWE-863Incorrect authorization
How to fix
Update
- argoproj argo_workflows3.7.11, 4.0.2 or later
- github.com/argoproj/argo-workflows/v33.7.11 or later
- github.com/argoproj/argo-workflows/v44.0.2 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| argoproj argo_workflows | 3.7.0 ≤ v < 3.7.11, 4.0.0 ≤ v < 4.0.2 | 3.7.11, 4.0.2 |
| github.com/argoproj/argo-workflows/v3Go | 3.7.0 ≤ v < 3.7.11, v < 3.7.11 | 3.7.11 |
| github.com/argoproj/argo-workflows/v4Go | v < 4.0.2 | 4.0.2 |
| github.com/argoproj/argo-workflowsGo | No range specified | — |
| github.com/argoproj/argo-workflows/v2Go | No range specified | — |
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