CVE-2026-42183

LOW SEVERITY

CVSS Score & Metrics

Base Score

6.5 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H                                    

Vulnerability Description

Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. From version 4.0.0 to before version 4.0.5, a nil pointer dereference in server/auth/gatekeeper.go rbacAuthorization() causes a panic (denial of service) for SSO users whose claims match a namespace-level RBAC rule but not an SSO-namespace rule, when SSO_DELEGATE_RBAC_TO_NAMESPACE=true. This issue has been patched in version 4.0.5.

Vulnerability Details

Published Date

May 04, 2026

Last Modified

May 14, 2026

CWE ID

CWE-476

Source

GitHub

Vendor

Product

github.com/argoproj/argo-workflows/v4

External References

https://github.com/argoproj/argo-workflows/security/advisories/GHSA-p4gq-3vxj-f4jq
https://github.com/argoproj/argo-workflows/commit/c4cc17d0c034fa9a9cc01ef1af6c8016c93071d4
https://github.com/argoproj/argo-workflows/releases/tag/v4.0.5
https://github.com/advisories/GHSA-p4gq-3vxj-f4jq

CVE-2026-42183

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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