install-playwright-mcp
Install Playwright MCP server for browser automation in Claude Code
63%
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Low
Low-risk findings worth noting
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tessl review fix ./plugins/claude-code-dev/skills/install-playwright-mcp/SKILL.mdW011: Third-party content exposure detected (indirect prompt injection risk)
What this means
The skill exposes the agent to untrusted, user-generated content from public third-party sources, creating a risk of indirect prompt injection. This includes browsing arbitrary URLs, reading social media posts or forum comments, and analyzing content from unknown websites.
Why it was flagged
Third-party content exposure detected (high risk: 0.90). This skill installs a Playwright MCP server and explicitly exposes browser automation tools (e.g., "browser_navigate", "browser_click", "browser_snapshot") and even instructs testing with "Navigate to google.com and take a snapshot" in SKILL.md, which means the agent can fetch and read arbitrary public web pages (untrusted third‑party content) that can influence its subsequent actions.
W012: Unverifiable external dependency detected (runtime URL that controls agent)
What this means
The skill fetches instructions or code from an external URL at runtime, and the fetched content directly controls the agent’s prompts or executes code. This dynamic dependency allows the external source to modify the agent’s behavior without any changes to the skill itself.
Why it was flagged
Potentially malicious external URL detected (high risk: 1.00). The skill installs and runs remote code at runtime via the command "npx @playwright/mcp@latest", which downloads and executes an external package required for the MCP server, so this is a runtime fetch that executes remote code (flagged: npx @playwright/mcp@latest).
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- Security analysis
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