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Security audit

预付款与预付账款核销核对(免费版)

Security checks for vulnerabilities and agentic risk

Overview

This is a local Chinese-language accounting ledger checker that runs bundled Node.js code on user-supplied input without network access, credentials, persistence, or hidden high-impact behavior.

Install only if you are comfortable running a local Node.js checker on prepayment ledger text. It does not appear to send data out or persist anything, but its interface and results are Chinese-only and it intentionally omits several checks reserved for the full version.

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
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • 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
Findings (6)

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 41)May include surrounding context.

md
node scripts/run.mjs --sample # 先看样例

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 42)May include surrounding context.

md
node scripts/run.mjs --sample # 先看样例

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
91% confidence
Finding

This JavaScript file contains all user-facing comments, advice, notes, disclaimers, and result strings in Chinese, including guidance returned to users such as the insufficient-input advice and final disclaimer. Under the policy, forcing a specific language without user opt-in is a natural-language locale violation unless the locale constraint is explicitly documented and justified, which it is not here.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

All user-facing natural-language content in the script, including the title, usage, errors, and result explanations, is hardcoded in Chinese. There is no indication that users may choose another language or that the Chinese-only constraint is required for a documented region-specific compliance purpose.

Content

No source excerpt is available for this finding.

Intent-Code Divergence

Low
Category
Not specified by scanner
Confidence
95% confidence
Finding

The comment on loadInput states that non-JSON input will be handled as plain-text material, giving '直接粘贴的合同全文' as the example. That contradicts the rest of this file, which consistently documents and prompts for a prepayment-offset ledger with headers rather than arbitrary contract text.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
90% confidence
Finding

The JSON contains only Chinese-language text and gives no indication that the skill offers a language choice or that the locale restriction is documented as region-specific. Under the policy, forcing a specific language without user opt-in can be a natural-language policy violation.

Content

No source excerpt is available for this finding.