CVE-2026-42296

Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. Prior to versions 3.7.14 and 4.0.5, a user with create Workflow permission can bypass templateReferencing: Strict to get host network access, switch service accounts, override pod security context, add tolerations to schedule on control-plane nodes, or enable SA token mounting. This defeats the stated purpose of the feature. The practical impact depends on what Kubernetes-level controls are in place. Clusters with PodSecurity admission or OPA/Gatekeeper would independently block some of these (like hostNetwork). Clusters that rely on Argo's Strict mode as the primary enforcement layer are fully exposed. This issue has been patched in versions 3.7.14 and 4.0.5.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/argoproj/argo-workflows/commit/534f4ff1cbd86908e8ff76d97d553ad5a49a950d	Patch
https://github.com/argoproj/argo-workflows/releases/tag/v3.7.14	Release Notes
https://github.com/argoproj/argo-workflows/releases/tag/v4.0.5	Release Notes
https://github.com/argoproj/argo-workflows/security/advisories/GHSA-3775-99mw-8rp4	Exploit Mitigation Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-42296
https://bugzilla.redhat.com/show_bug.cgi?id=2468446
https://github.com/argoproj/argo-workflows/security/advisories/GHSA-3775-99mw-8rp4	Exploit Mitigation Vendor Advisory
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42296.json

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:argoproj:argo_workflows::::::go::*
	cpe:2.3:a:argoproj:argo_workflows::::::go::*

History

No history.

Information

Published : 2026-05-09 04:16

Updated : 2026-07-24 21:10

NVD link : CVE-2026-42296

Mitre link : CVE-2026-42296

CVE.ORG link : CVE-2026-42296

JSON object : View

Products Affected

argoproj

argo_workflows

CWE

CWE-863

Incorrect Authorization

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