Back to skill

Security audit

book-digest

Security checks for vulnerabilities and agentic risk

Overview

This is a book-analysis helper with no executable payload; users should only accept its optional follow-up skill creation if they want persistent book-specific guidance.

Install this if you want a structured book-reading assistant. Be aware it may offer to create a separate book-specific reference skill after a session; approve that only when you want reusable guidance saved for future agent use.

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
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Findings (3)

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

The trigger condition is broad enough that any user providing arbitrary text for 'deep analysis' may unintentionally activate this skill, even when the request is not about book digestion. This can cause prompt hijacking at the routing layer, misapply the wrong behavioral policy, and interfere with safer or more appropriate skills for the actual task.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
96% confidence
Finding

The instruction '中文优先 — 用户用中文交流,用中文回应' imposes a language behavior rule rather than offering a language choice. While partially conditioned on the user's language, it does not clearly allow user override or present language/locale as an explicit option.

Content

No source excerpt is available for this finding.

Context-Inappropriate Capability

Medium
Category
Not specified by scanner
Confidence
93% confidence
Finding

The skill directs the assistant to create a new independent skill artifact under research/ after completing the reading workflow, which expands behavior from content analysis into persistent artifact generation. This can lead to unauthorized capability creation, instruction persistence, or scope creep, especially if book content or user prompts are transformed into reusable decision-support skills without explicit separate consent and safeguards.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.