7.7High
CVE-2026-93991Argo Workflows 4.1.0 through 4.1.3 Cross-Namespace Disclosure via Negated Selector
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.
Weakness (CWE):
CWE-639
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
| Vendor | Product | Versions | |
|---|---|---|---|
| argoproj | argo-workflows | 4.1.0 – < 4.1.4 |
References and patches
- GitHub Security Advisory (GHSA-q65w-j2vp-47c4) vendor-advisory
- https://github.com/argoproj/argo-workflows/commit/a40972386c097ddf816d2e60e13f058bedca53d9 patch
- argo-workflows v4.1.4 Release Notes release-notes
- https://github.com/argoproj/argo-workflows product
- VulnCheck Advisory: Argo Workflows 4.1.0 through 4.1.3 Cross-Namespace Disclosure via Negated Selector third-party-advisory