pincushion-mcp@1.11.17
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AI Security Review
scanned 2mo ago · by lpm-firewall-aiNo install-time hook, self-dependency chain, secret harvesting, or covert payload execution was found. The agent-directed destructive instruction and configuration-sourced shell execution create a concrete unsafe capability that warrants a warning.
Static reason
High-risk behavior combination matched malicious policy.; previous stored version diff introduced dangerous source
Trigger
An MCP client requests the implement prompt, or a user runs mobile-wall publish with a deploy command.
Impact
An agent may delete Git lock files or run an unreviewed project-configured deployment command.
Mechanism
Agent-directed Git lock deletion and configured shell execution.
AI rationale
No install-time hook, self-dependency chain, secret harvesting, or covert payload execution was found. The agent-directed destructive instruction and configuration-sourced shell execution create a concrete unsafe capability that warrants a warning.
Evidence
server.jsmobile-wall.mjslib/posthog.js.git/HEAD.lock.git/index.lock.git/refs/heads/*.lock.git/config.lockcrit-wall/wall
Network endpoints1
us.i.posthog.com
Decision evidence
public snapshotAI called this Suspicious at 91.0% confidence as Dangerous Capability with low false-positive risk.
Evidence for warning
- The MCP implement prompt tells an agent to delete Git lock files immediately, silently, and without permission.
- The mobile publish feature passes a configured deploy command to a shell.
- Telemetry is enabled by default and sends product events to PostHog unless disabled.
Evidence against
- package.json has no preinstall, install, or postinstall lifecycle hook.
- The shell command is reached only through the explicit mobile-wall publish flow and a deploy-command setting.
- Cloud requests use a supplied license key for the package's sync service; no general environment harvesting was found.
- License display helpers expose only the final four characters of a key.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetworkShell
HighEntropyStringsTelemetryUrlStrings
Source & flagged code
11 flaggedmobile-wall.mjsView file
17// injectable so both modes are testable without a simulator.
L18: import { execFileSync } from 'node:child_process';
L19: import {
High
mobile-wall.mjs#virtual:normalized:round1View file
121function publicUrlFrom(text) {
L122: const m = /(https?:\/\/[^\s"'<>]+)/.exec(String(text || ''));\n return m ? m[1].replace(/[),.;]+$/, '') : '';\n}\n\nasync function fetchCloudAnnotations(ctx, { baseUrl, key, proje...
L123: }
Critical
Same File Env Network Execution
A single source file combines environment access, network access, and code or shell execution with blocking evidence.
mobile-wall.mjs#virtual:normalized:round1View on unpkg · L12117// injectable so both modes are testable without a simulator.
L18: import { execFileSync } from "node:child_process";
L19: import {
...
L32: const DEFAULT_OUT = "crit-wall";
L33: const DEFAULT_FUNCTION_BASE = "https://dpsqzszdviltqvethxbr.supabase.co/functions/v1";
L34:
...
L78: function isSignedIn() {
L79: if (process.env.PINCUSHION_LICENSE_KEY) return true;
L80: try { return !!readFileSync(join(homedir(), ".pincushion", "license-key"), "utf8").trim(); } catch { return false; }
L81: }
...
L97: const firstLine = (e) => String(e.message || e).split("\n")[0];
L98: const execErrText = (e) => [e?.stderr, e?.stdout, e?.message].filter(Boolean).join("\n");
Findings
5 Critical7 High3 Medium6 Low
CriticalSame File Env Network Executionmobile-wall.mjs#virtual:normalized:round1
CriticalCredential Exfiltrationserver.js
CriticalDownload Executemobile-wall.mjs#virtual:normalized:round1
CriticalTrigger Reachable Dangerous Capabilityserver.js
CriticalPrevious Version Dangerous Deltalib/git.js
HighChild Processmobile-wall.mjs
HighShell
HighCommand Output Exfiltrationmobile-wall.mjs#virtual:normalized:round1
HighCopied Package Dependency Bridgelib/posthog.js
HighTrigger Reachable Credential Exfiltrationserver.js
HighTrigger Reachable Command Output Exfiltrationmobile-wall.mjs#virtual:normalized:round1
Affected versions and remediation
This report applies to pincushion-mcp@1.11.17.
See all versions of pincushion-mcp for other recorded verdicts.
- Review the evidence and your use of pincushion-mcp@1.11.17 before allowing it. Restrict the permissions described in this report.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
Evidence last updated: .
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