What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-11 · updated 2026-07-15
• Weakness: CWE-863

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.

Affected products

• argoproj argo-workflows: from 3.7.0 before 3.7.11; from 4.0.0 before 4.0.2 — fixed in 3.7.11, 4.0.2

How to fix

Upgrade to a fixed version: argoproj argo-workflows 3.7.11, 4.0.2. Check the vendor advisory for mitigations.

References

• https://github.com/argoproj/argo-workflows/security/advisories/GHSA-56px-hm34-xqj5
• 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

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