CVE-2026-93991
Argo Workflows 4.1.0 through 4.1.3 Cross-Namespace Disclosure via Negated Selector
CVSS Score
7.7
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-639 |
| Vendor | argoproj |
| Product | argo-workflows |
| Published | Sep 19, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
argoproj / argo-workflows
4.1.0 < 4.1.4
References
github.com: https://github.com/argoproj/argo-workflows/security/advisories/GHSA-q65w-j2vp-47c4 github.com: https://github.com/argoproj/argo-workflows/commit/a40972386c097ddf816d2e60e13f058bedca53d9 github.com: https://github.com/argoproj/argo-workflows/releases/tag/v4.1.4 github.com: https://github.com/argoproj/argo-workflows vulncheck.com: https://www.vulncheck.com/advisories/argo-workflows-4.1.0-through-4.1.3-cross-namespace-disclosure-via-negated-selector
Credits
🔍 thesecguy45 🔍 euriconicacio