CVE-2026-28229

CRITICAL
2026-03-11 [email protected] GHSA-56px-hm34-xqj5
9.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Patch Released
Mar 31, 2026 - 21:13 nvd
Patch available
Analysis Generated
Mar 12, 2026 - 22:06 vuln.today
CVE Published
Mar 11, 2026 - 16:16 nvd
CRITICAL 9.8

Tags

Kubernetes Authentication Bypass Redhat Suse

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.

Analysis

Auth bypass in Argo Workflows before 4.0.2/3.7.11.

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Remediation

Within 24 hours: Inventory all Argo Workflows deployments and verify versions; disable public API access and restrict network connectivity to Argo Workflows components to trusted internal networks only. Within 7 days: Implement RBAC hardening on Kubernetes ServiceAccounts bound to Argo; enable audit logging for all workflow submissions; consider deploying a reverse proxy with strict authentication enforcement in front of Argo APIs. …

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Priority Score

49
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +49
POC: 0

Vendor Status

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CVE-2026-28229 vulnerability details – vuln.today
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