CVE-2026-93991
Argo Workflows 4.1.0 through 4.1.3 Cross-Namespace Disclosure via Negated Selector
- State
- Published
- Severity
- 8.3 High
- Published
- Sep 19, 2026
- Updated
- Sep 21, 2026
- Reserved
- Sep 19, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.3 High | 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 | VulnCheck |
| 3.1 | 7.7 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-639 Authorization Bypass Through User-Controlled Key
Affected Products
| Product | Versions |
|---|---|
argo-workflowsargoproj |
|
References
- GitHub Security Advisory (GHSA-q65w-j2vp-47c4)vendor-advisory
- https://github.com/argoproj/argo-workflows/commit/a40972386c097ddf816d2e60e13f058bedca53d9patch
- argo-workflows v4.1.4 Release Notesrelease-notes
- https://github.com/argoproj/argo-workflowsproduct
- VulnCheck Advisory: Argo Workflows 4.1.0 through 4.1.3 Cross-Namespace Disclosure via Negated Selectorthird-party-advisory
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