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OpenAdvisories
High · 7.7 CVE-2026-93991 EUVD-2026-83619GHSA-3fwg-9p8x-37mv

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

Published Sep 19, 2026 · Updated Sep 21, 2026 · Assigned by VulnCheck

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.

Affected products

VendorProductAffectedFixed
argoproj argo-workflows 4.1.0 – < 4.1.4 4.1.4

References