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Security audit

Amazon Product Details by Gecho

Security checks for vulnerabilities and agentic risk

Overview

This skill is a disclosed Amazon product-detail workflow that uses Gecho's MCP bridge and Chrome extension, with no artifact-backed evidence of hidden data theft or destructive behavior.

Install only if you are comfortable using Gecho Bridge with a logged-in Chrome/Amazon session. Prefer a pinned or bundled Gecho Bridge version when possible, and review the Chrome extension and MCP package publisher before configuring the npx @latest setup.

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
  • System Prompt LeakageDirect Leakage, Indirect Extraction, Tool-Based Exfiltration
  • 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
Findings (2)

Direct Prompt Extraction

High
Category
System Prompt Leakage
Confidence
85% confidence
Finding

Skill contains instructions that could directly expose system prompts, internal rules, or hidden instructions to users or external parties.

Content

Scanner excerpt · SKILL.md (reported line 285)May include surrounding context.

md
Join the [WeCom group](https://github.com/gecho-ai/gecho-bridge/blob/main/qywx.jpg) or use the [1:1 support QR code](https://github.com/gecho-ai/gecho-bridge/blob/main/wx.jpg).

## Output guidelines

For success:
- Say the tool completed.

Rp1

Medium
Category
MCP Rug Pull
Confidence
97% confidence
Finding

The skill instructs users to install and run an MCP server via npx ... @latest, which pulls and executes the newest published package version at runtime rather than a reviewed, fixed release. If the upstream package is compromised or a breaking/malicious update is published, users could unknowingly execute attacker-controlled code on their system.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.