What is CVE-2026-28229?

CVE-2026-28229 is a critical-severity vulnerability in Argoproj Argo-workflows, classified under Incorrect Authorization. CVSS score: 9.8/10. Published 2026-03-11.

How severe is CVE-2026-28229?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Argoproj Argo-workflows

CVE-2026-28229

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 ClusterWorkflowTem…

Vulnerability class: Broken Access Control

EPSS: 0.000 (4.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Argoproj Argo-workflows — versions >= 4.0.0, < 4.0.2, < 3.7.11

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

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

Frequently asked questions

What is CVE-2026-28229?: CVE-2026-28229 is a critical-severity vulnerability in Argoproj Argo-workflows, classified under Incorrect Authorization. CVSS score: 9.8/10. Published 2026-03-11.
How severe is CVE-2026-28229?: Critical severity. CVSS v3 base score is 9.8 out of 10.