coreweave-security-basics

DevOps & Security

Secure CoreWeave deployments with RBAC, network policies, and secrets management. Use when hardening GPU workloads, managing model access, or configuring namespace isolation. Trigger with phrases like "coreweave security", "coreweave rbac", "secure coreweave", "coreweave secrets".

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Source SKILL.md: https://github.com/jeremylongshore/claude-code-plugins-plus-skills/blob/HEAD/plugins/saas-packs/coreweave-pack/skills/coreweave-security-basics/SKILL.md

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CoreWeave Security Basics

Community-contributed. Not affiliated with, endorsed by, or sponsored by CoreWeave, Inc. CoreWeave is a registered trademark of CoreWeave, Inc.

Overview

CoreWeave provides bare-metal GPU cloud on Kubernetes. Security concerns center on compute credential management (kubeconfig, deploy tokens), network isolation between inference workloads, secrets for model registry access (HuggingFace, container registries), and protecting sensitive training data on persistent volumes. A compromised namespace can expose GPU resources, model weights, and customer inference data.

API Key Management

import { KubeConfig, CoreV1Api } from "@kubernetes/client-node";

function createCoreWeaveClient(): CoreV1Api {
  const apiKey = process.env.COREWEAVE_API_KEY;
  if (!apiKey) {
    throw new Error("Missing COREWEAVE_API_KEY — set via secrets manager");
  }
  const kc = new KubeConfig();
  kc.loadFromDefault();
  const api = kc.makeApiClient(CoreV1Api);
  // Never log kubeconfig or API key contents
  console.log("CoreWeave client initialized for namespace:", process.env.CW_NAMESPACE);
  return api;
}

Webhook Signature Verification

import crypto from "crypto";
import { Request, Response, NextFunction } from "express";

function verifyCoreWeaveWebhook(req: Request, res: Response, next: NextFunction): void {
  const signature = req.headers["x-coreweave-signature"] as string;
  const secret = process.env.COREWEAVE_WEBHOOK_SECRET!;
  const expected = crypto.createHmac("sha256", secret).update(req.body).digest("hex");
  if (!signature || !crypto.timingSafeEqual(Buffer.from(signature), Buffer.from(expected))) {
    res.status(401).send("Invalid signature");
    return;
  }
  next();
}

Input Validation

import { z } from "zod";

const WorkloadRequestSchema = z.object({
  namespace: z.string().regex(/^[a-z0-9-]+$/).max(63),
  gpu_type: z.enum(["A100_80GB", "A100_40GB", "H100_80GB", "RTX_A6000"]),
  gpu_count: z.number().int().min(1).max(8),
  image: z.string().regex(/^[a-z0-9.\-/]+:[a-z0-9.\-]+$/),
  model_id: z.string().min(1).max(200),
});

function validateWorkloadRequest(data: unknown) {
  return WorkloadRequestSchema.parse(data);
}

Data Protection

const CW_SENSITIVE_FIELDS = ["kubeconfig", "hf_token", "registry_password", "api_key", "model_weights_url"];

function redactCoreWeaveLog(record: Record<string, unknown>): Record<string, unknown> {
  const redacted = { ...record };
  for (const field of CW_SENSITIVE_FIELDS) {
    if (field in redacted) redacted[field] = "[REDACTED]";
  }
  return redacted;
}

Security Checklist

Kubeconfig stored in secrets manager, never in repos
Kubernetes Secrets used for model tokens (not env vars in YAML)
Network policies restrict inference endpoint access
RBAC limits namespace access per team
Container images scanned for CVEs before deployment
PVCs encrypted at rest for training data
GPU workload namespaces isolated with NetworkPolicy
Deploy tokens scoped per-namespace, not cluster-wide

Error Handling

Vulnerability	Risk	Mitigation
Leaked kubeconfig	Full cluster access, GPU resource theft	Secrets manager + RBAC scoping
Open inference endpoints	Unauthorized model access	NetworkPolicy ingress rules
Unscanned container images	CVE exploitation in GPU pods	CI image scanning before deploy
Overly broad RBAC	Cross-namespace data leakage	Per-team namespace RBAC bindings
Unencrypted PVCs	Training data exposure	Encrypted storage classes

Resources

Next Steps

See coreweave-prod-checklist.