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CVE-2026-93991

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

CVSS 4.0 8.3 HIGHCVSS 3.1 7.7 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-93991

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-93991

Published

argo-workflows

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "argoproj",
                    "product": "argo-workflows",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:golang/github.com/argoproj/argo-workflows/v4",
                    "versions": [
                        {
                            "version": "4.1.0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "4.1.4"
                        }
                    ],
                    "repo": "https://github.com/argoproj/argo-workflows"
                }

Original source record · Cite this exact observation · Complete original publisher JSON