CVE-2026-93991

Argo Workflows 4.1.0 through 4.1.3 Cross-Namespace Disclosure via Negated Selector

Published Sep 19, 2026 CVSS 4.0 · 8.3 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

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

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Sep 21, 2026, 8:46 PM
Reserved
Sep 19, 2026, 12:04 PM
Status
Awaiting Analysis
Published
Sep 19, 2026, 11:17 PM
Modified
Sep 22, 2026, 8:25 PM