creator MCP Server Security Report

pl.gamedev/creator

Build browser games on gamedev.pl from your coding agent.

14F

Security Trust Score

Grade F · Serious issues

Tier 1 · Public sourceHigh confidence · 90%latest v1.0.1 Repository

Declared MCP capabilities

ResourcesPrompts

Run it securely

This server scored F. Run it behind runtime policy enforcement so one bad tool call can't become an incident.

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2 issues capping this score

criticalNo command-injection sinks — 15 occurrences
criticalNo dynamic code execution — 7 occurrences

Reputation7stars23forks0open issuestodaylast commit11yage

Security controlslatest scored version v1.0.1

Each control is evaluated deterministically with evidence. The score is earned from passing controls; a failed guard caps it.

Model–MCP Runtime Guardrails

Warn
Strict JSON Schema Enforcementschemas not strict
Tool inputs are constrained (additionalProperties:false), so unexpected arguments can't be smuggled in.
Fix: Set additionalProperties:false and require explicit parameters on every tool.
Pass
Indirect Prompt Injection (IPI) Defensesguardno injection markers
Tool/prompt/resource text is free of hidden instructions that could hijack the agent.
Pass
User-in-the-Loop / Approval Scopeguardno destructive tool scope
No over-broad or destructive tools (arbitrary shell, bulk-delete) that warrant human approval.
N/A
Tool Definition Integrityguardno prior version to diff
Every consecutive version pair is diffed for new injection markers or destructive scope — a risky diff anywhere in history is a rug-pull (fail, durable); benign description drift warns.

Application Security Checks

Fail
No command-injection sinksguard15 occurrences
Untrusted tool input reaching a shell yields remote code execution. How many servers fail this?
apps/api/src/access-token.ts:76apps/api/src/firestore-indexes.test.ts:98apps/api/src/github-client.ts:1589apps/api/src/github-client.ts:1836
Fix: Never pass tool arguments to a shell; use argv arrays with shell disabled.
Fail
No dynamic code executionguard7 occurrences
eval()/exec()/Function() on tool-derived strings allows arbitrary code execution. How many servers fail this?
apps/api/src/github-client.test.ts:903apps/api/src/github-client.test.ts:949apps/api/src/github-client.test.ts:1001apps/api/src/github-client.test.ts:1081
Fix: Remove eval/exec; parse and dispatch explicitly.
Warn
No path traversalguard136 occurrences
Naive path checks let tools read/write outside intended directories (EscapeRoute-class).
apps/api/scripts/access-token.ts:44apps/api/scripts/access-token.ts:88apps/api/scripts/access-token.ts:110apps/api/scripts/beta-approve.ts:6
Fix: Resolve to a canonical path and verify containment; reject ../ and symlinks.
Warn
No SSRF sinksguard3 occurrences
Fetching tool-supplied URLs can pivot into internal networks and metadata services.
apps/api/src/oauth-as.ts:116apps/api/src/remix.test.ts:1287apps/api/src/remix.test.ts:1290
Fix: Allow-list destinations; reject arbitrary/loopback/link-local URLs.
Warn
Dependencies pinned (lockfile)no lockfile found
A lockfile makes installs reproducible and resistant to silent dependency swaps.
Fix: Commit a lockfile (package-lock.json / pnpm-lock.yaml / poetry.lock).
Warn
Adoption & popularitylimited adoption
A small, capped nudge from stars/downloads — widely-used servers get more eyes on bugs. It can never offset a real security failure.
Fix: Adoption grows naturally with real-world use; this never gates the score.
Pass
No unsafe deserializationguardno sinks found
pickle/yaml.load/etc. on untrusted data can execute code.
Pass
No committed secretsguardno secrets found
Hardcoded keys/tokens in published source are live credentials an attacker can use.
Pass
Credentials sourced from environmentreads credentials from environment
Reading secrets from env/secret stores avoids hardcoding them.
Pass
Actively maintainedrecent commits
Unmaintained servers don't receive security fixes.
Pass
Repository not archivedguardactive
Archived repositories will never be patched.
Pass
Declares a licenseGPL-3.0
A clear license is required for legal enterprise use.
Pass
Has a security policySECURITY.md present
A SECURITY.md gives a private path to report vulnerabilities.
Not checked
No known-vulnerable dependenciesno lockfile found
Runtime dependencies (parsed from the lockfile) are scanned against OSV.dev for published CVEs. Advisory: flagged dependencies lower the score but don't hard-cap it, since transitive reachability is unproven.
Not checked
Signed releasesnot evaluated
Signed releases let consumers verify artifacts weren't tampered with.
N/A
No install/post-install scriptsguardno published package
install hooks run arbitrary code on every consumer at install time.
N/A
Package name not typosquattingguardno published package
Names mimicking popular packages are a common malware delivery vector.
N/A
Published with provenanceno published package
Build provenance attests the artifact was built from the claimed source by CI.
N/A
Established maintainerno published package
Brand-new / single anonymous maintainers raise takeover and malware risk.

Transport & Trust Model

Pass
Transport Encryption (TLS)guardall remotes use HTTPS
Plaintext HTTP exposes traffic and bearer tokens to interception.
Pass
IAM / Authentication ScopingOAuth / PRM handling detected
OAuth 2.1 / Protected Resource Metadata gates who can invoke tools.
Pass
Execution Sandboxingcontainerized
A container/sandbox image limits blast radius; a server that runs natively has full host access.
Pass
Network Exposureno bind-all detected
Binding 0.0.0.0 or exposing debug inspectors widens the attack surface.
N/A
Live Endpoint Reachablenot dynamically scanned
A dynamic scan connected to the declared remote endpoint and it responded — verified live, not a dead URL.
N/A
Authentication Enforced (live)not dynamically scanned
If the server declares auth is required, it must actually reject anonymous clients. Serving tools to unauthenticated callers is a real exposure.

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Versions

Version	Score	Status	Published
v1.0.1latest	14F	scored	8/6/2026

Wondering how this compares? The MCP Security Index tracks grade distribution, committed secrets, and missing authentication across the whole ecosystem, refreshed monthly.