{"id":"CVE-2026-93991","published":"2026-09-19T23:17:10.360","lastModified":"2026-09-22T20:25:55.870","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.","cvssScore":7.7,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","cwes":["CWE-639"],"vendors":[],"products":[],"references":[{"url":"https://github.com/argoproj/argo-workflows","tags":[]},{"url":"https://github.com/argoproj/argo-workflows/commit/a40972386c097ddf816d2e60e13f058bedca53d9","tags":[]},{"url":"https://github.com/argoproj/argo-workflows/releases/tag/v4.1.4","tags":[]},{"url":"https://github.com/argoproj/argo-workflows/security/advisories/GHSA-q65w-j2vp-47c4","tags":[]},{"url":"https://www.vulncheck.com/advisories/argo-workflows-4.1.0-through-4.1.3-cross-namespace-disclosure-via-negated-selector","tags":[]}],"exploitRefs":[{"url":"https://github.com/argoproj/argo-workflows","tags":[]},{"url":"https://github.com/argoproj/argo-workflows/commit/a40972386c097ddf816d2e60e13f058bedca53d9","tags":[]},{"url":"https://github.com/argoproj/argo-workflows/releases/tag/v4.1.4","tags":[]},{"url":"https://github.com/argoproj/argo-workflows/security/advisories/GHSA-q65w-j2vp-47c4","tags":[]}],"hasPoc":true,"ai":{"summary":"The flaw allows attackers with namespace-scoped list permissions to bypass authorization and retrieve archived workflows from all other namespaces, exposing sensitive information.","exploitability":"Exploitation requires attackers to have namespace-scoped list permissions and use a specific field selector with the NotEquals operator. This is moderately hard to exploit.","blast_radius":"If exploited, this could result in unauthorized access to sensitive workflow details across multiple namespaces, impacting data confidentiality.","remediation":"Upgrade to Argo Workflows 4.1.4 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["auth-bypass","info-leak","workflows"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-10-09T08:45:48.823Z"}}