Is CVE-2026-28229 actively exploited?

No active exploitation of CVE-2026-28229 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-28229 be exploited remotely?

Yes. CVE-2026-28229 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-28229?

CVE-2026-28229 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2026-28229

CWE-863Published: March 11, 2026· Updated: Mar 12, 2026

9.8

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:12.4th

Official 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.

NVD Source

Technical Analysis

CVE-2026-28229 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.