CVE-2026-42183— Argo Workflows: SSO RBAC Delegation Nil Pointer Dereference DoS (gatekeeper.go)
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I. Basic Information for CVE-2026-42183
Vulnerability Information
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Vulnerability Title
Argo Workflows: SSO RBAC Delegation Nil Pointer Dereference DoS (gatekeeper.go)
Source: NVD (National Vulnerability Database)
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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
空指针解引用
Source: NVD (National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| argoproj | argo-workflows | >= 4.0.0, < 4.0.5 | - |
II. Public POCs for CVE-2026-42183
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · argoproj · 2026-05-09 · 5 CVEs total
| CVE-2026-42296 | 8.1 HIGH | Argo Workflows has incomplete fix for CVE-2026-31892: hostNetwork, securityContext, servic |
| CVE-2026-42294 | Argo Workflows: Unauthenticated Memory Exhaustion (DoS) in Webhook Interceptor | |
| CVE-2026-42297 | Argo Workflows Is Missing Authorization in Sync ConfigMap Provider | |
| CVE-2026-42295 | Argo Workflows: Exposure of artifact repository credentials |
IV. Related Vulnerabilities
Same product: argo-workflows
- CVE-2026-42296
Argo Workflows has incomplete fix for CVE-2026-31892: hostNe - CVE-2026-42295
Argo Workflows: Exposure of artifact repository credentials - CVE-2026-42294
Argo Workflows: Unauthenticated Memory Exhaustion (DoS) in W - CVE-2026-42297
Argo Workflows Is Missing Authorization in Sync ConfigMap Pr - CVE-2026-40886
Argo Workflows: Unchecked annotation parsing in pod informer
Same vendor: argoproj
- CVE-2026-42296
Argo Workflows has incomplete fix for CVE-2026-31892: hostNe - CVE-2026-42295
Argo Workflows: Exposure of artifact repository credentials - CVE-2026-42294
Argo Workflows: Unauthenticated Memory Exhaustion (DoS) in W - CVE-2026-42297
Argo Workflows Is Missing Authorization in Sync ConfigMap Pr - CVE-2026-42880
ArgoCD ServerSideDiff is vulnerable to Kubernetes Secret Ext
Same weakness: CWE-476
- CVE-2026-8252
Open5GS SMF smf_nsmf_handle_create_data_in_hsmf null pointer - CVE-2026-7259
Null pointer dereference in php_mb_check_encoding() via mb_e - CVE-2026-7262
NULL pointer dereference in SOAP apache:Map decoder with mis - CVE-2026-6666
PgBouncer crash in kill_pool_logins_server_error - CVE-2026-41684
Incus: Nil Dereferences on Restore via Malformed YAML
V. Comments for CVE-2026-42183
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