CVE-2026-42183
Fixed in a distro release EPSS <1%CVSS 2.3
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.
Products: argoproj argo-workflows
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| Go | github.com/argoproj/argo-workflows | no fix |
| Go | github.com/argoproj/argo-workflows/v2 | no fix |
| Go | github.com/argoproj/argo-workflows/v3 | no fix |
| Go | github.com/argoproj/argo-workflows/v4 | 4.0.5 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | argo-workflow-controller-3.6 | 3.6.19-r6 |
| Chainguard | argo-workflow-controller-3.7 | 3.7.15-r2 |
| Chainguard | argo-workflow-controller-fips-3.6 | 3.6.19-r10 |
| Chainguard | argo-workflow-controller-fips-3.7 | 3.7.15-r3 |
| Chainguard | argo-workflow-executor-3.6 | 3.6.19-r6 |
| Chainguard | argo-workflow-executor-3.7 | 3.7.15-r2 |
| Chainguard | argo-workflow-executor-fips-3.6 | 3.6.19-r10 |
| Chainguard | argo-workflow-executor-fips-3.7 | 3.7.15-r3 |
| Chainguard | argo-workflows-3.6 | 3.6.19-r6 |
| Chainguard | argo-workflows-3.7 | 3.7.15-r2 |
| Chainguard | argo-workflows-fips-3.6 | 3.6.19-r10 |
| Chainguard | argo-workflows-fips-3.7 | 3.7.15-r3 |
| Chainguard | kfp-driver | 2.16.1-r15 |
| Chainguard | kubeflow-pipelines-apiserver | 2.16.1-r15 |
| Chainguard | kubeflow-pipelines-apiserver | 2.17.2-r4 |
| Chainguard | kubeflow-pipelines-cache_server | 2.16.1-r15 |
| Chainguard | kubeflow-pipelines-driver-fips | 2.16.1-r2 |
| Chainguard | kubeflow-pipelines-fips-launcher-v2 | 2.16.1-r1 |
| Chainguard | kubeflow-pipelines-launcher-v2 | 2.16.1-r15 |
| Chainguard | kubeflow-pipelines-metadata-writer-compat | 2.17.2-r4 |
| Chainguard | kubeflow-pipelines-persistence_agent | 2.16.1-r15 |
| Chainguard | kubeflow-pipelines-scheduledworkflow | 2.16.1-r15 |
| Wolfi | argo-workflow-controller-3.7 | 3.7.15-r2 |
| Wolfi | argo-workflow-executor-3.7 | 3.7.15-r2 |
| Wolfi | argo-workflows-3.7 | 3.7.15-r2 |
| Wolfi | kubeflow-pipelines-apiserver | 2.16.1-r15 |
| Wolfi | kubeflow-pipelines-apiserver | 2.17.2-r4 |
| Wolfi | kubeflow-pipelines-cache_server | 2.16.1-r15 |
| Wolfi | kubeflow-pipelines-metadata-writer-compat | 2.17.2-r4 |
| Wolfi | kubeflow-pipelines-persistence_agent | 2.16.1-r15 |
| Wolfi | kubeflow-pipelines-scheduledworkflow | 2.16.1-r15 |
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 |