Is @cloudflare/playwright-mcp safe to use?

@cloudflare/playwright-mcp has a security risk score of 100/100 (CRITICAL risk). Our security analysis detected 219 findings. Review the detailed security assessment below to understand the specific risks before installation.

What are the security risks of @cloudflare/playwright-mcp?

Based on our automated security analysis, @cloudflare/playwright-mcp presents critical risk level. The extension is analyzed for malware patterns, secret exposure, network communications, permissions, and supply chain vulnerabilities.

How is the security score calculated?

Risky Plugins calculates security scores using weighted categories: severity of findings (25 points max), malware detections (35 points), secret exposure (28 points), network communications (10 points), and obfuscation (10 points). Scores range from 0-100, with higher scores indicating greater risk.

What does CRITICAL, HIGH, MEDIUM, LOW, MINIMAL risk mean?

CRITICAL (80-100): Severe security issues like malware. HIGH (60-79): Significant vulnerabilities. MEDIUM (40-59): Moderate security concerns. LOW (20-39): Minor issues. MINIMAL (0-19): Very low risk. Always review findings before installing any extension.

Is "@cloudflare/playwright-mcp" on MCP Registry Safe to Install?

Name: @cloudflare/playwright-mcp
Availability: InStock
Author: celso

celso · mcp · v0.0.5

Cloudflare Playwright Tools for MCP

Risk Assessment

Analyzed

100

out of 100

CRITICAL

219 security findings detected across all analyzers

MCP server analyzed for tool poisoning, prompt injection, and data exfiltration

Severity Breakdown

Critical

High

Medium

Low

Info

Finding Categories

Malware Signatures

Secrets

Network

IoC Indicators

YARA Rules Matched

7 rules(53 hits)

postinstall network communication postinstall obfuscation postinstall environment access postinstall file manipulation credential env files postinstall file download postinstall system command

MCP Server Analysis

MCP servers expose tools and resources to AI assistants. Unlike browser extensions, they run as standalone processes with direct system access. Tool definitions are analyzed for prompt injection, data exfiltration, and tool poisoning patterns.

About This Extension

Cloudflare Playwright Tools for MCP

Detailed Findings

148 total

YARA Rule Matches

7 rules

Indicators of Compromise

Network indicators, suspicious strings, and potential IoCs extracted during analysis

URLs

IP Addresses

Domains

Strings

All Indicators · 69

Domain

detected Domain: config.vision

XIOC detected Domain: config.vision

extracted_from_files

URL

detected URL: https://playground.ai.cloudflare.com/)

XIOC detected URL: https://playground.ai.cloudflare.com/)

extracted_from_files

URL

detected URL: https://github.com/cloudflare/playwright)

XIOC detected URL: https://github.com/cloudflare/playwright)

extracted_from_files

URL

detected URL: https://deploy.workers.cloudflare.com/button)](https://deploy.workers.cloudflare.com/?url=https://github.com/cloudflare/playwright-mcp/tree/main/cloudflare/example)

XIOC detected URL: https://deploy.workers.cloudflare.com/button)](https://deploy.workers.cloudflare.com/?url=https://github.com/cloudflare/playwright-mcp/tree/main/cloudflare/example)

extracted_from_files

URL

detected URL: https://playground.ai.cloudflare.com/

XIOC detected URL: https://playground.ai.cloudflare.com/

extracted_from_files

URL

detected URL: https://[my-mcp-url].workers.dev/sse

XIOC detected URL: https://[my-mcp-url].workers.dev/sse

extracted_from_files

Domain

detected Domain: locator.click

XIOC detected Domain: locator.click

extracted_from_files

Domain

detected Domain: locator.press

XIOC detected Domain: locator.press

extracted_from_files

Domain

detected Domain: params.name

XIOC detected Domain: params.name

extracted_from_files

Domain

detected Domain: params.steps.map

XIOC detected Domain: params.steps.map

extracted_from_files

Domain

detected Domain: tab.page.off

XIOC detected Domain: tab.page.off

extracted_from_files

Domain

detected Domain: tools.map

XIOC detected Domain: tools.map

extracted_from_files

Domain

detected Domain: context.run

XIOC detected Domain: context.run

extracted_from_files

Domain

detected Domain: this.config.network

XIOC detected Domain: this.config.network

extracted_from_files

Domain

detected Domain: value.map

XIOC detected Domain: value.map

extracted_from_files

Domain

detected Domain: this.page

XIOC detected Domain: this.page

extracted_from_files

Domain

detected Domain: exports.tab

XIOC detected Domain: exports.tab

extracted_from_files

Domain

detected Domain: messages.map

XIOC detected Domain: messages.map

extracted_from_files

Domain

detected Domain: page.keyboard.press

XIOC detected Domain: page.keyboard.press

extracted_from_files

URL

detected URL: http://stackoverflow.com/a/398120/376773

XIOC detected URL: http://stackoverflow.com/a/398120/376773

extracted_from_files

Domain

detected Domain: 1.run

XIOC detected Domain: 1.run

extracted_from_files

Domain

detected Domain: this.tools

XIOC detected Domain: this.tools

extracted_from_files

Domain

detected Domain: schema.name

XIOC detected Domain: schema.name

extracted_from_files

Domain

detected Domain: t.page

XIOC detected Domain: t.page

extracted_from_files

Domain

detected Domain: currenttab.page

XIOC detected Domain: currenttab.page

extracted_from_files

Domain

detected Domain: tab.tab

XIOC detected Domain: tab.tab

extracted_from_files

Domain

detected Domain: state.tab

XIOC detected Domain: state.tab

extracted_from_files

Domain

detected Domain: base.network

XIOC detected Domain: base.network

extracted_from_files

Domain

detected Domain: playwright.dev

XIOC detected Domain: playwright.dev

extracted_from_files

URL

detected URL: http://www.apache.org/licenses/LICENSE-2.0

XIOC detected URL: http://www.apache.org/licenses/LICENSE-2.0

extracted_from_files

Domain

detected Domain: 1.map

XIOC detected Domain: 1.map

extracted_from_files

Domain

detected Domain: tool.schema.name

XIOC detected Domain: tool.schema.name

extracted_from_files

Domain

detected Domain: tool2.schema.name

XIOC detected Domain: tool2.schema.name

extracted_from_files

Domain

detected Domain: request.params.name

XIOC detected Domain: request.params.name

extracted_from_files

Domain

detected Domain: document.documentelement.style

XIOC detected Domain: document.documentelement.style

extracted_from_files

Domain

detected Domain: formatter.call

XIOC detected Domain: formatter.call

extracted_from_files

Domain

detected Domain: createdebug.formatargs.call

XIOC detected Domain: createdebug.formatargs.call

extracted_from_files

Domain

detected Domain: createdebug.save

XIOC detected Domain: createdebug.save

extracted_from_files

detected Domain: createdebug.skips.map

XIOC detected Domain: createdebug.skips.map

extracted_from_files

Domain

detected Domain: this.name

XIOC detected Domain: this.name

extracted_from_files

Domain

detected Domain: browser.launchoptions.channel

XIOC detected Domain: browser.launchoptions.channel

extracted_from_files

Domain

detected Domain: workers.dev

XIOC detected Domain: workers.dev

extracted_from_files

Domain

detected Domain: www.apache.org

XIOC detected Domain: www.apache.org

extracted_from_files

Domain

detected Domain: object.prototype.hasownproperty.call

XIOC detected Domain: object.prototype.hasownproperty.call

extracted_from_files

Domain

detected Domain: stackoverflow.com

XIOC detected Domain: stackoverflow.com

extracted_from_files

Domain

detected Domain: developer.mozilla.org

XIOC detected Domain: developer.mozilla.org

extracted_from_files

Domain

detected Domain: exports.save

XIOC detected Domain: exports.save

extracted_from_files

Domain

detected Domain: exports.storage

XIOC detected Domain: exports.storage

extracted_from_files

Domain

detected Domain: deploy.workers.cloudflare.com

XIOC detected Domain: deploy.workers.cloudflare.com

extracted_from_files

Domain

detected Domain: developers.cloudflare.com

XIOC detected Domain: developers.cloudflare.com

extracted_from_files

Domain

detected Domain: github.com

XIOC detected Domain: github.com

extracted_from_files

Domain

detected Domain: playground.ai.cloudflare.com

XIOC detected Domain: playground.ai.cloudflare.com

extracted_from_files

Domain

detected Domain: demo.playwright.dev

XIOC detected Domain: demo.playwright.dev

extracted_from_files

Domain

detected Domain: claude.ai

XIOC detected Domain: claude.ai

extracted_from_files

Domain

detected Domain: code.visualstudio.com

XIOC detected Domain: code.visualstudio.com

extracted_from_files

URL

detected URL: https://developers.cloudflare.com/browser-rendering/)

XIOC detected URL: https://developers.cloudflare.com/browser-rendering/)

extracted_from_files

Domain

detected Domain: overrides.network

XIOC detected Domain: overrides.network

extracted_from_files

URL

detected URL: https://code.visualstudio.com/docs/configure/command-line):

XIOC detected URL: https://code.visualstudio.com/docs/configure/command-line):

extracted_from_files

URL

detected URL: https://github.com/geelen/mcp-remote),

XIOC detected URL: https://github.com/geelen/mcp-remote),

extracted_from_files

URL

detected URL: https://claude.ai/download)

XIOC detected URL: https://claude.ai/download)

extracted_from_files

URL

detected URL: https://demo.playwright.dev/todomvc/.

XIOC detected URL: https://demo.playwright.dev/todomvc/.

extracted_from_files

URL

detected URL: https://playwright.dev

XIOC detected URL: https://playwright.dev

extracted_from_files

URL

detected URL: https://github.com/cloudflare/playwright-mcp.git

XIOC detected URL: https://github.com/cloudflare/playwright-mcp.git

extracted_from_files

URL

detected URL: http://localhost:$

XIOC detected URL: http://localhost:$

extracted_from_files

detected IP: ::e

XIOC detected IP: ::e

extracted_from_files

URL

detected URL: http://stackoverflow.com/a/16459606/376773

XIOC detected URL: http://stackoverflow.com/a/16459606/376773

extracted_from_files

URL

detected URL: https://github.com/facebook/react-native/pull/1632

XIOC detected URL: https://github.com/facebook/react-native/pull/1632

extracted_from_files

URL

detected URL: https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages

XIOC detected URL: https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages

extracted_from_files

Domain

detected Domain: tab.page.keyboard.press

XIOC detected Domain: tab.page.keyboard.press

extracted_from_files

Security Analysis Summary

Security Analysis Overview

@cloudflare/playwright-mcp is a mcp extension published by celso. Version 0.0.5 has been analyzed by the Risky Plugins security platform, receiving a risk score of 100/100 (CRITICAL risk) based on 219 security findings.

Risk Assessment

This extension presents critical security risk. Severe issues were detected, potentially including malware indicators, exposed secrets, or dangerous behaviors. Installation is strongly discouraged until these issues are addressed.

Findings Breakdown

Critical: 2 finding(s)
High: 63 finding(s)
Medium: 83 finding(s)

What Was Analyzed

The security assessment covers multiple analysis categories:

Malware Detection: YARA rule matching against 2,400+ malware signatures
Secret Detection: Scanning for exposed API keys, tokens, and credentials
Static Analysis: Code-level security analysis for common vulnerability patterns
Network Analysis: Detection of suspicious network communications and endpoints
Obfuscation Detection: Identification of code obfuscation techniques

Developer Information

@cloudflare/playwright-mcp is published by celso on the mcp marketplace.

Recommendation

This extension is not recommended for installation without thorough manual review. Consider alternatives with lower risk scores, or contact the developer to address the identified security concerns.

Source Code Viewer

Source Code Not Available

Source code is not available for this version of the extension.

Frequently Asked Questions

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Risk Assessment

Severity Breakdown

Finding Categories

YARA Rules Matched

MCP Server Analysis

About This Extension

Detailed Findings

MCP-TOOL-TOOL-POISONING-lib/esm/src/tools/navigate.js-57

MCP-TOOL-TOOL-POISONING-lib/cjs/src/tools/navigate.js-61

MCP-TOOL-CREDENTIAL-ACCESS-lib/cjs/src/config.js-16

MCP-TOOL-CREDENTIAL-ACCESS-lib/cjs/src/browserContextFactory.js-188

MCP-TOOL-CREDENTIAL-ACCESS-lib/esm/src/browserContextFactory.js-161

MCP-TOOL-CREDENTIAL-ACCESS-lib/cjs/src/fileUtils.js-15

MCP-TOOL-CREDENTIAL-ACCESS-lib/esm/src/fileUtils.js-11

MCP-TOOL-CREDENTIAL-ACCESS-lib/cjs/src/browserContextFactory.js-184

MCP-TOOL-CREDENTIAL-ACCESS-lib/cjs/src/fileUtils.js-11

MCP-TOOL-CREDENTIAL-ACCESS-lib/esm/src/browserContextFactory.js-165

MCP-TOOL-CREDENTIAL-ACCESS-lib/esm/src/fileUtils.js-7

MCP-TOOL-CREDENTIAL-ACCESS-lib/esm/src/config.js-12

MCP-TOOL-FILESYSTEM-ACCESS-lib/esm/src/browserContextFactory.js-197

MCP-TOOL-FILESYSTEM-ACCESS-lib/esm/src/browserContextFactory.js-169

MCP-TOOL-FILESYSTEM-ACCESS-lib/cjs/src/browserContextFactory.js-220

MCP-TOOL-FILESYSTEM-ACCESS-lib/esm/src/config.js-30

MCP-TOOL-NETWORK-ACCESS-lib/esm/src/tools/utils.js-11

NET-FETCH-lib/cjs/src/browserContextFactory.js-201

MCP-TOOL-FILESYSTEM-ACCESS-lib/cjs/src/browserContextFactory.js-192

MCP-TOOL-NETWORK-ACCESS-lib/cjs/src/tools/utils.js-15

MCP-TOOL-FILESYSTEM-ACCESS-lib/cjs/src/config.js-34

MCP-TOOL-NETWORK-ACCESS-lib/cjs/src/browserContextFactory.js-201

NET-FETCH-lib/esm/src/browserContextFactory.js-178

MCP-TOOL-NETWORK-ACCESS-lib/esm/src/browserContextFactory.js-178

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