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Security audit

Rpg Character Builder

Security checks for vulnerabilities and agentic risk

Overview

This skill is a small, local RPG-themed self-development helper with no evidence of hidden access, persistence, network use, or destructive behavior.

Before installing, understand that this is a motivational framing tool for self-reflection, not a substitute for professional mental-health, coaching, or career advice. It appears local and low-risk from the inspected artifacts.

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
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
  • 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 · handler.py (reported line 78)May include surrounding context.

python
def _load_prompt_template(skill_name: str) -> str:
    del skill_name
    return PROMPT_TEMPLATE


def _normalize_key(key: Any) -> str:

Undeclared Tool Scope

Medium
Category
MCP Least Privilege
Confidence
70% confidence
Finding

Without declared permissions the skill's intent is opaque and cannot be validated.

Content

No source excerpt is available for this finding.

Missing User Warnings

Low
Category
Not specified by scanner
Confidence
77% confidence
Finding

This code file performs a file read operation by opening and reading SKILL.md, but there is no confirmation prompt, logging, or inline disclosure around that access. While the operation is low risk and likely benign, SQP-2 for code files asks to flag file access that lacks any form of user disclosure when it is not clearly surfaced to the user.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.