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Security audit

中文快递查询

Security checks for vulnerabilities and agentic risk

Overview

This is a simple Chinese package-tracking skill; it has no bundled executable code or persistence, but users should know queries go to a third-party logistics site and the referenced script is missing from the package.

Before installing, expect that shipment identifiers and any requested phone-number suffix may be submitted to kuaidi100.com for lookup. Also note that this package appears incomplete because the documented tracking script is not included, so it may not work as written.

A.I.G

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

SkillSpector

Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (3)

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
96% confidence
Finding

The skill advertises very broad trigger phrases such as '帮我查个快递', '查一下物流', and 'Use for ANY Chinese express tracking requests', which can cause over-invocation on common requests and route users into a tool that sends data to an external tracking service. While not code execution, this increases the chance of unintended disclosure of tracking numbers and related shipment metadata when the user may only be asking a general question. In this context, the risk is real because the skill is designed to contact a third-party service without an API-key or explicit consent flow.

Content

No source excerpt is available for this finding.

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

The documentation states that data comes from kuaidi100.com but does not warn that user-supplied tracking numbers and possibly phone suffixes may be transmitted to that external service. Tracking numbers can reveal purchase activity, addresses, timing, merchant relationships, and other sensitive logistics metadata, so omission of a privacy notice can lead to uninformed disclosure. The context makes this more significant because external transmission is the core function of the skill.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
70% confidence
Finding

The description is written to operate in Chinese and frames usage around Chinese-language requests, while also including an English trigger phrase. There is no explicit statement that users may choose their preferred response language, which can conflict with a language/locale policy requiring opt-in rather than forcing one locale.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.