Medium severity6.5GHSA Advisory· Published May 9, 2026· Updated Jul 24, 2026
CVE-2026-42183
CVE-2026-42183
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/argoproj/argo-workflows/v4Go | >= 4.0.0, < 4.0.5 | 4.0.5 |
Affected products
29>= 4.0.0, <= 4.0.4+ 1 more
- (no CPE)range: >= 4.0.0, <= 4.0.4
- cpe:2.3:a:argoproj:argo_workflows:*:*:*:*:*:go:*:*range: >=4.0.0,<4.0.5
- osv-coords27 versionspkg:apk/chainguard/argo-workflow-controller-3.7pkg:apk/chainguard/argo-workflow-controller-fips-3.6pkg:apk/chainguard/argo-workflow-controller-fips-3.7pkg:apk/chainguard/argo-workflow-executor-3.6pkg:apk/chainguard/argo-workflow-executor-3.7pkg:apk/chainguard/argo-workflow-executor-fips-3.6pkg:apk/chainguard/argo-workflow-executor-fips-3.7pkg:apk/chainguard/argo-workflows-3.6pkg:apk/chainguard/argo-workflows-3.7pkg:apk/chainguard/argo-workflows-fips-3.6pkg:apk/chainguard/kfp-driverpkg:apk/chainguard/kubeflow-pipelines-apiserverpkg:apk/chainguard/kubeflow-pipelines-cache_serverpkg:apk/chainguard/kubeflow-pipelines-driver-fipspkg:apk/chainguard/kubeflow-pipelines-fips-launcher-v2pkg:apk/chainguard/kubeflow-pipelines-persistence_agentpkg:apk/chainguard/kubeflow-pipelines-scheduledworkflowpkg:apk/wolfi/argo-workflow-controller-3.7pkg:apk/wolfi/argo-workflow-executor-3.7pkg:apk/wolfi/argo-workflows-3.7pkg:apk/wolfi/kubeflow-pipelines-apiserverpkg:apk/wolfi/kubeflow-pipelines-cache_serverpkg:apk/wolfi/kubeflow-pipelines-persistence_agentpkg:apk/wolfi/kubeflow-pipelines-scheduledworkflowpkg:bitnami/argo-workflowspkg:golang/github.com/argoproj/argo-workflows/v4pkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Leap%2016.0
< 3.7.15-r2+ 26 more
- (no CPE)range: < 3.7.15-r2
- (no CPE)range: < 3.6.19-r10
- (no CPE)range: < 3.7.15-r3
- (no CPE)range: < 3.6.19-r6
- (no CPE)range: < 3.7.15-r2
- (no CPE)range: < 3.6.19-r10
- (no CPE)range: < 3.7.15-r3
- (no CPE)range: < 3.6.19-r6
- (no CPE)range: < 3.7.15-r2
- (no CPE)range: < 3.6.19-r10
- (no CPE)range: < 2.16.1-r15
- (no CPE)range: < 2.16.1-r15
- (no CPE)range: < 2.16.1-r15
- (no CPE)range: < 2.16.1-r2
- (no CPE)range: < 2.16.1-r1
- (no CPE)range: < 2.16.1-r15
- (no CPE)range: < 2.16.1-r15
- (no CPE)range: < 3.7.15-r2
- (no CPE)range: < 3.7.15-r2
- (no CPE)range: < 3.7.15-r2
- (no CPE)range: < 2.16.1-r15
- (no CPE)range: < 2.16.1-r15
- (no CPE)range: < 2.16.1-r15
- (no CPE)range: < 2.16.1-r15
- (no CPE)range: >= 4.0.0, < 4.0.5
- (no CPE)range: >= 4.0.0, < 4.0.5
- (no CPE)range: < 0.0.20260723T184607-160000.1.1
Patches
Vulnerability mechanics
References
5- github.com/argoproj/argo-workflows/commit/c4cc17d0c034fa9a9cc01ef1af6c8016c93071d4nvdPatchWEB
- github.com/argoproj/argo-workflows/security/advisories/GHSA-p4gq-3vxj-f4jqnvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-p4gq-3vxj-f4jqghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-42183ghsaADVISORY
- github.com/argoproj/argo-workflows/releases/tag/v4.0.5nvdRelease NotesWEB
News mentions
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