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Security audit

esp-textbook-planning

Security checks for vulnerabilities and agentic risk

Overview

This skill is a coherent Chinese-language helper for ESP textbook planning and Tiptap JSON deliverables, with no executable code, network behavior, persistence, or hidden authority.

Install this if you want a Chinese-oriented assistant for ESP textbook planning that returns structured Tiptap JSON. Users who need another language should state that preference explicitly; no evidence was found of code execution, external network access, credential handling, or persistent changes.

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 (4)

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
91% confidence
Finding

The document is written entirely in Chinese and gives prescriptive output instructions, including at L17 and L31-L33, without indicating that users may choose another language or opt in to Chinese output. Under the policy rule, forcing a specific language without user choice can constitute a natural-language policy violation unless clearly documented as a justified region-specific constraint.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

The file title and all examples are written exclusively in Chinese, presenting the expected interaction format in a single fixed language. There is no indication that users may choose another language or that the locale restriction is justified as region-specific, which can violate language/locale policy requirements.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
91% confidence
Finding

The title and the entire protocol are written as a required output specification for 'Tiptap 输出协议', and the instructions prescribe exact output behavior without indicating that language can vary based on user preference. Under the policy, forcing a specific language or locale without user opt-in is a natural-language policy violation.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
95% confidence
Finding

The instruction '默认使用中文' establishes a language default for responses. Under the policy, language constraints should not be imposed unless the user is given a choice or the locale restriction is clearly documented and justified.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.