@agimon-ai/po-browse-tool@0.0.0-alpha.50
MCP server for browser automation using Playwright with profile management, page registry, and multi-browser support
AI Security Review
scanned 11d ago · by lpm-firewall-aiThe package’s intended browser automation tool executes caller-supplied JavaScript in the host runtime, creating a real code execution risk. The inspected source shows no automatic install trigger or independent malicious transfer, so this warrants a warning rather than a block.
Static reason
One or more suspicious static signals were detected.
Trigger
An MCP caller invokes browser_run_code with inline code or a saved snippet.
Impact
Invoked code may access host runtime capabilities and return results to the MCP caller. No automatic execution or fixed external recipient was identified.
Mechanism
The runtime compiles inline code with Function and supplies browser-related objects; the code runs in the host runtime rather than an isolated browser page.
AI rationale
The package’s intended browser automation tool executes caller-supplied JavaScript in the host runtime, creating a real code execution risk. The inspected source shows no automatic install trigger or independent malicious transfer, so this warrants a warning rather than a block.
Evidence
dist/index.cjsdist/index.mjs
Decision evidence
public snapshotAI called this Suspicious at 89.0% confidence as Dangerous Capability with medium false-positive risk.
Evidence for warning
- The package manifest lists build and development scripts, with no install lifecycle hook shown.
- The runtime registers a browser_run_code tool that accepts JavaScript snippets.
- The tool compiles supplied code with the Function constructor in the package runtime, with page, context, and browser as parameters.
- The tool passes caller-supplied code to that compiler and returns its result in the tool response.
- The ESM entrypoint contains the same Function-based execution behavior.
Evidence against
- Code execution requires a caller to invoke the browser tool; the source does not show this behavior running during installation.
- The reviewed path returns results through the tool response and does not identify a fixed external recipient.
Behavioral surface
ChildProcessCryptoDynamicRequireEnvironmentVarsEvalFilesystemNetworkShellWebSocket
Source & flagged code
8 flaggeddist/index.cjsView file
1Object.defineProperty(exports,Symbol.toStringTag,{value:`Module`});var e=Object.create,t=Object.defineProperty,n=Object.getOwnPropertyDescriptor,r=Object.getOwnPropertyNames,i=Obje...
L2: `)){let[t,r]=n.trim().split(/\s+/,2);if(!t||!r)continue;let i=Number(t),a=Number(r);if(Number.isNaN(i)||Number.isNaN(a))continue;let o=e.get(a);o?o.push(i):e.set(a,[i])}return e}as...
High
1Object.defineProperty(exports,Symbol.toStringTag,{value:`Module`});var e=Object.create,t=Object.defineProperty,n=Object.getOwnPropertyDescriptor,r=Object.getOwnPropertyNames,i=Obje...
L2: `)){let[t,r]=n.trim().split(/\s+/,2);if(!t||!r)continue;let i=Number(t),a=Number(r);if(Number.isNaN(i)||Number.isNaN(a))continue;let o=e.get(a);o?o.push(i):e.set(a,[i])}return e}as...
L3: `);return await h.default.writeFile(m.default.join(n,`manifest.json`),JSON.stringify(r,null,2),{mode:384}),await h.default.writeFile(m.default.join(n,`background.js`),i,{mode:384})...
High
1Object.defineProperty(exports,Symbol.toStringTag,{value:`Module`});var e=Object.create,t=Object.defineProperty,n=Object.getOwnPropertyDescriptor,r=Object.getOwnPropertyNames,i=Obje...
L2: `)){let[t,r]=n.trim().split(/\s+/,2);if(!t||!r)continue;let i=Number(t),a=Number(r);if(Number.isNaN(i)||Number.isNaN(a))continue;let o=e.get(a);o?o.push(i):e.set(a,[i])}return e}as...
Findings
6 High4 Medium5 Low
HighChild Processdist/index.cjs
HighShelldist/index.cjs
HighSame File Env Network Executiondist/index.cjs
HighCommand Output Exfiltrationdist/index.cjs
HighSandbox Evasion Gated Capabilitydist/index.cjs
HighTrigger Reachable Command Output Exfiltrationdist/index.cjs
MediumDynamic Requiredist/stubs/playwright-test.cjs
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowScripts Present
LowEvaldist/extension/background.js
LowFilesystem
LowHigh Entropy Strings
Affected versions and remediation
This report applies to @agimon-ai/po-browse-tool@0.0.0-alpha.50.
See all versions of @agimon-ai/po-browse-tool for other recorded verdicts.
- Review the evidence and your use of @agimon-ai/po-browse-tool@0.0.0-alpha.50 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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