mcp-sling

Item: mcp-sling
Rating: 54
Author: M8ven

Enables interaction with the Sling scheduling and workforce management platform, allowing users to manage shifts, users, calendars, and reports through natural language.

→ poncheck/mcp-sling · listed on glama

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// key findings

⚠️

Known vulnerabilities in dependencies: 17 high

Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.

✅

No credential exfiltration, no sensitive file access, no obfuscation

Static analysis found nothing flowing your secrets to unexpected places.

🔐

You'll be asked for 2 credentials: SLING_PASSWORD, SLING_TOKEN

These are read from process.env at runtime. Make sure you trust where they’ll be sent.

// known CVEs in dependencies17 high12 low

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

high@modelcontextprotocol/sdk@1.0.4GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.0.4GHSA-w48q-cv73-mx4w

Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

highaxios@1.7.0GHSA-35jp-ww65-95wh

axios Vulnerable to Full Man-in-the-Middle via Prototype Pollution Gadget in `config.proxy`

highaxios@1.7.0GHSA-3g43-6gmg-66jw

axios Vulnerable to Credential Theft and Response Hijacking via Prototype Pollution Gadget in Config Merge

highaxios@1.7.0GHSA-43fc-jf86-j433

Axios is Vulnerable to Denial of Service via __proto__ Key in mergeConfig

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// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

configSLING_EMAIL— Your Sling account email

🔐 secretSLING_PASSWORD— Your Sling account password

configSLING_SERVER— (optional) - API server to use (default: "api", use "test-api" for staging)

🔐 secretSLING_TOKEN— your-token-from-browser

// full audit trail

The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.

// improvement guidance — verified publishers only

We have 4 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.

// embed badge in your README

[![M8ven Score](https://m8ven.ai/badge/mcp/poncheck-mcp-sling-14we3p)](https://m8ven.ai/mcp/poncheck-mcp-sling-14we3p)

commit: 71b6afb40ad474a4abd22a471308bae291e988f2

code hash: 9563e50755b4e5f2c750a6e9d53b68061c251b7de85ee465102936a50d4aec8f

verified: 6/10/2026, 10:30:19 AM

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