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Security audit

PBE Extractor

Security checks for vulnerabilities and agentic risk

Overview

This is a text-analysis skill that extracts principles from user-provided content and does not include executable code or external service calls.

This skill is appropriate for extracting and organizing ideas from text. Before installing, note that it may process sensitive pasted content through whatever model provider your agent is already configured to use, and the maintainer should clarify the requires_review.md wording so users are not confused about whether review artifacts are written to disk.

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
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • 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 (2)

Anti-Refusal Statement

High
Category
Anti-Refusal
Confidence
80% confidence
Finding

Skill instructs the agent to omit warnings, disclaimers, or ethical commentary. Stripping safety caveats hides risk from the user and is a common jailbreak preamble.

Content

Scanner excerpt · SKILL.md (reported line 83)May include surrounding context.

md
### The Extraction Process

**Bootstrap**: Read source material without judgment
**Learn**: Identify patterns, test for invariance
**Enforce**: Validate through rephrasing test

Intent-Code Divergence

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The skill states it does not write files, but later instructs that drifted normalization cases be added to requires_review.md, creating a contradictory data-handling promise. This can mislead operators about persistence behavior and cause unintended storage of potentially sensitive user-derived content if an agent implementation follows the schema literally.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.