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Security audit

Pizza Agent (LAUNCH SPECIAL - 4.99)

Security checks for vulnerabilities and agentic risk

Overview

This is a small, disclosed pizza-ordering instruction skill with no executable code or hidden system access.

Before installing, verify the listed price because the metadata and sales copy disagree, and connect only narrowly scoped Google Sheets credentials for the menu and order log. No evidence of malicious behavior was found in the inspected skill files.

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
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • 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 (1)

Autonomous Decision Making

Medium
Category
Excessive Agency
Confidence
75% confidence
Finding

Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.

Content

Scanner excerpt · SKILL.md (reported line 21)May include surrounding context.

md
## Critical ThumbGate Rules
- **Zone Check:** Block any order where the address is outside the allowed delivery radius.
- **Customization Match:** Block orders with mutually exclusive toppings (e.g., vegan crust with non-vegan cheese) without confirmation.
- **Half-and-Half Logic:** Block any half-and-half order that doesn't explicitly confirm the base sauce for both sides.
- **Mandatory Phone Log:** Never finalize an order without capturing a valid callback number.