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Security audit

Amazon Product Search by Gecho

Security checks for vulnerabilities and agentic risk

Overview

This skill is a coherent Amazon product-search integration, but users should understand it relies on a live logged-in browser session and an unpinned external MCP package.

Install this only if you are comfortable using Gecho Bridge, the Gecho Chrome extension, and a logged-in Amazon browser session for product research. Prefer pinning or reviewing the Gecho Bridge MCP package before use instead of blindly relying on @latest, and choose a save directory deliberately if storing raw results.

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
Vulnerability Patterns
  • System Prompt LeakageDirect Leakage, Indirect Extraction, Tool-Based Exfiltration
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Findings (3)

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 286)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 without pinning or integrity control. If the upstream package is compromised or a malicious release is published, users could execute attacker-controlled code locally during setup.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
87% confidence
Finding

The activation rule says to use this skill when the user asks to "collect structured results, save data, or research this platform," which is broader than a concrete trigger phrase list. Although nearby context is Amazon-focused, this wording does not clearly distinguish when this skill should activate versus other ecommerce or data-collection skills.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.