CVE-2026-93991

Argo Workflows versions 4.1.0 through 4.1.3 contain an authorization bypass vulnerability in ListArchivedWorkflows that fails to apply cluster-scoped access review when the metadata.namespace field selector uses the NotEquals operator. Attackers with namespace-scoped list permissions can use a negated namespace field selector to retrieve archived workflows from all other namespaces, exposing spec arguments, parameter values, and annotations.

CVSS v3 7.7 HIGH

7.7^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.1 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/argoproj/argo-workflows
https://github.com/argoproj/argo-workflows/commit/a40972386c097ddf816d2e60e13f058bedca53d9
https://github.com/argoproj/argo-workflows/releases/tag/v4.1.4
https://github.com/argoproj/argo-workflows/security/advisories/GHSA-q65w-j2vp-47c4
https://www.vulncheck.com/advisories/argo-workflows-4.1.0-through-4.1.3-cross-namespace-disclosure-via-negated-selector

Configurations

No configuration.

History

19 Sep 2026, 23:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-19 23:17

Updated : 2026-09-22 20:25

NVD link : CVE-2026-93991

Mitre link : CVE-2026-93991

CVE.ORG link : CVE-2026-93991

JSON object : View

Products Affected

No product.

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

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