CVE-2026-42296— Argo Workflows has incomplete fix for CVE-2026-31892: hostNetwork, securityContext, serviceAccountName bypass templateReferencing Strict/Secure
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I. Basic Information for CVE-2026-42296
Vulnerability Information
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Vulnerability Title
Argo Workflows has incomplete fix for CVE-2026-31892: hostNetwork, securityContext, serviceAccountName bypass templateReferencing Strict/Secure
Source: NVD (National Vulnerability Database)
Vulnerability Description
Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. Prior to versions 3.7.14 and 4.0.5, a user with create Workflow permission can bypass templateReferencing: Strict to get host network access, switch service accounts, override pod security context, add tolerations to schedule on control-plane nodes, or enable SA token mounting. This defeats the stated purpose of the feature. The practical impact depends on what Kubernetes-level controls are in place. Clusters with PodSecurity admission or OPA/Gatekeeper would independently block some of these (like hostNetwork). Clusters that rely on Argo's Strict mode as the primary enforcement layer are fully exposed. This issue has been patched in versions 3.7.14 and 4.0.5.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制不正确
Source: NVD (National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| argoproj | argo-workflows | < 3.7.14 | - |
II. Public POCs for CVE-2026-42296
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · argoproj · 2026-05-09 · 5 CVEs total
| 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-2026-42183 | Argo Workflows: SSO RBAC Delegation Nil Pointer Dereference DoS (gatekeeper.go) | |
| CVE-2026-42295 | Argo Workflows: Exposure of artifact repository credentials |
IV. Related Vulnerabilities
Same product: argo-workflows
- CVE-2026-42295
Argo Workflows: Exposure of artifact repository credentials - CVE-2026-42294
Argo Workflows: Unauthenticated Memory Exhaustion (DoS) in W - CVE-2026-42183
Argo Workflows: SSO RBAC Delegation Nil Pointer Dereference - 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-2026-42295
Argo Workflows: Exposure of artifact repository credentials - CVE-2026-42294
Argo Workflows: Unauthenticated Memory Exhaustion (DoS) in W - CVE-2026-42183
Argo Workflows: SSO RBAC Delegation Nil Pointer Dereference - 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-863
- CVE-2026-42571
Privilege Escalation Attack affecting Pelican Web UI - CVE-2025-15633
HCL BigFix WebUI is affected by an improper authorization vu - CVE-2025-66170
Apache CloudStack: Any user can list backups that they shoul - CVE-2026-41903
FreeScout IDOR Vulnerability: PERM_EDIT_USERS allows modifyi - CVE-2026-41689
Wallos: Shared local webhook allowlist lets low-privilege us
V. Comments for CVE-2026-42296
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