CVE-2026-42294— Argo Workflows: Unauthenticated Memory Exhaustion (DoS) in Webhook Interceptor
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I. Basic Information for CVE-2026-42294
Vulnerability Information
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Vulnerability Title
Argo Workflows: Unauthenticated Memory Exhaustion (DoS) in Webhook Interceptor
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, the Webhook Interceptor loads the entire request body into memory before authenticating the request or verifying its signature. This occurs on the /api/v1/events/ endpoint, which is publicly accessible (albeit intended for webhooks). An attacker can send a request with an extremely large body (e.g., multiple gigabytes), causing the Argo Server to allocate excessive memory, potentially leading to an Out-Of-Memory (OOM) crash and denial of service. This issue has been patched in versions 3.7.14 and 4.0.5.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
不加限制或调节的资源分配
Source: NVD (National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| argoproj | argo-workflows | < 3.7.14 | - |
II. Public POCs for CVE-2026-42294
| # | 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-2026-42297 | 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-2026-42296
Argo Workflows has incomplete fix for CVE-2026-31892: hostNe - CVE-2026-42295
Argo Workflows: Exposure of artifact repository credentials - 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-2026-42296
Argo Workflows has incomplete fix for CVE-2026-31892: hostNe - CVE-2026-42295
Argo Workflows: Exposure of artifact repository credentials - 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-770
- CVE-2026-42189
Russh: Pre-auth DoS via unbounded allocation in keyboard-int - CVE-2026-42793
Atom table exhaustion via attacker-controlled GraphQL SDL na - CVE-2026-44499
ZEBRA: Permanent Block Discovery Halt via Gossip Queue Satur - CVE-2026-44500
ZEBRA: Allocation Amplification in Inbound Network Deseriali - CVE-2026-8124
GPAC box_code_base.c sidx_box_read allocation of resources
V. Comments for CVE-2026-42294
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