Description
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.
Published: 2026-09-19
Score: 8.3 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Sun, 20 Sep 2026 01:00:00 +0000

Type Values Removed Values Added
First Time appeared Argoproj argo-workflows
Vendors & Products Argoproj argo-workflows

Sat, 19 Sep 2026 23:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Argo Workflows 4.1.0 through 4.1.3 Cross-Namespace Disclosure via Negated Selector
First Time appeared Argoproj
Argoproj argo Workflows
Weaknesses CWE-639
CPEs cpe:2.3:a:argoproj:argo_workflows:*:*:*:*:*:*:*:*
Vendors & Products Argoproj
Argoproj argo Workflows
References
Metrics cvssV3_1

{'score': 7.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N'}

cvssV4_0

{'score': 8.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N'}


Subscriptions

Argoproj Argo-workflows Argo Workflows
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-19T22:58:11.895Z

Reserved: 2026-09-19T12:04:52.547Z

Link: CVE-2026-93991

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-19T23:17:10.360

Modified: 2026-09-19T23:17:10.360

Link: CVE-2026-93991

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-20T00:45:16Z

Weaknesses