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Security audit

Secondhand Furniture Listing Check

Security checks for vulnerabilities and agentic risk

Overview

This is a prompt-only used-furniture checklist skill with no executable code, network use, credentials, persistence, or hidden high-impact behavior.

Installers should understand that the skill is an English-only prompt workflow for practical shopping safety checks. It can help organize questions and risk flags, but it does not verify recalls itself, inspect items, provide legal advice, or guarantee that furniture is safe, clean, pest-free, authentic, or worth the price.

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
  • 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 (3)

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

Line L06 requires the manifest to declare language=en, which encodes a fixed language setting. Because no opt-in, alternative language support, or region-specific justification is provided, this conflicts with the language/locale policy.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
96% confidence
Finding

Line L08 states that public-facing documentation is 'English only,' which is a natural-language policy constraint. Under the policy rule, forcing a specific language without offering user choice or documenting a justified locale limitation is a violation.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
94% confidence
Finding

The manifest sets "language": "en", which is a natural-language locale constraint. There is no indication in this file that the skill offers a language choice or that the English-only restriction is justified by a region-specific purpose.

Content

No source excerpt is available for this finding.