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Security audit

Price Monitor

Security checks for vulnerabilities and agentic risk

Overview

This skill mostly matches price monitoring, but it gives browser automation broad authority to open arbitrary URLs from a CSV without guardrails, which can reach local or private resources.

Review before installing. Use this only with product lists you control, restrict monitored URLs to trusted public retailer domains, avoid opening generated CSV files in spreadsheet software with formula evaluation enabled, and do not configure external alerts unless you are comfortable sending monitored URLs and price data to those services.

A.I.G

Vulnerability Patterns
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs
  • Insecure Skill Coding PracticesFinds exploitable flaws such as hardcoded secrets or command injection
  • 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
Findings (2)

T05 · Unauthorized Access and Privilege Escalation

Error
Location
scripts/monitor_prices.py:41
Finding

Unrestricted Browser Navigation Enables Access to Internal and Local Resources

Content
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Remediation
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T09 · Insecure Skill Coding Practices

Warning
Location
scripts/monitor_prices.py:98
Finding

Untrusted Values Are Written to CSV Without Spreadsheet Formula Neutralization

Content
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Remediation
View remediation

SkillSpector

Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • Behavioral ASTexec() Call, eval() Call, Dynamic Import
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
Findings (5)

Tp4

High
Category
MCP Tool Poisoning
Confidence
90% confidence
Finding

The code substantially supports price monitoring, price history logging, and basic alerting for price changes. However, it does not implement inventory monitoring or general website content change detection; it only attempts to extract price text from pages. It also does not perform scheduling itself—execution is manual via CLI—and 'alert notifications' are only printed to the console rather than sent through a notification channel. So the description overstates the implemented capabilities, making it a mismatch.

Content

No source excerpt is available for this finding.

Undeclared Tool Scope

Medium
Category
MCP Least Privilege
Confidence
90% confidence
Finding

The skill demonstrates shell usage, file reads, and file writes but does not declare any tool scope or permissions boundaries. That makes the operational capability broader and less auditable than the metadata suggests, increasing the risk of unintended command execution, local file modification, or misuse if the skill is invoked in a permissive environment.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
89% confidence
Finding

The activation language is broad enough to trigger on generic web-monitoring or tracking requests beyond narrowly defined price checks. In an agent environment, overbroad routing can cause the skill to be selected for unintended tasks, expanding exposure to browser automation, shell, and file-writing behaviors in contexts the user did not specifically authorize.

Content

No source excerpt is available for this finding.

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

The skill advertises email and Discord webhook alerts without warning that collected monitoring data may be transmitted to third-party services. This can lead to unintentional exfiltration of URLs, pricing data, inventory details, or other monitored content outside the local environment, especially if users assume the skill is purely local.

Content

No source excerpt is available for this finding.

subprocess module call

Medium
Category
Dangerous Code Execution
Confidence
70% confidence
Finding

subprocess module calls execute external commands. Without careful input validation, this enables command injection.

Content

Scanner excerpt · scripts/monitor_prices.py (reported line 26)May include surrounding context.

python
"""Run agent-browser command and return output."""
    cmd = ["agent-browser"] + args
    try:
        result = subprocess.run(
            cmd,
            capture_output=True,
            text=True,