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Security audit

alltrails

Security checks for vulnerabilities and agentic risk

Overview

The skill clearly discloses its read-only AllTrails integration and use of your signed-in browser session, with no evidence of hidden or unrelated access.

Use your own account and expect requested private hiking and profile data to become available to your agent. Review the extension's requested domains and capabilities, consider pinning the npm package version, and revoke pairing when finished. The skill warns that its unofficial access may break or conflict with AllTrails' terms; this review does not certify external executable dependencies.

A.I.G

Vulnerability Patterns
  • Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
  • Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
  • Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs

SkillSpector

Vulnerability Patterns
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
Findings (1)

MCP Config Access

High
Category
Agent Snooping
Confidence
95% confidence
Finding

Skill accesses MCP server configuration files (mcp.json). MCP configs contain server URLs, authentication tokens, and tool definitions — reading them allows the skill to discover and potentially abuse other tool integrations.

Content

Scanner excerpt · SKILL.md (reported line 17)May include surrounding context.

Setup

Add to .mcp.json in your project or ~/.claude/mcp.json:

json
{

Static analysis

No suspicious patterns detected.