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Security audit

卖家之家(跨境电商)私信查询和发送

Security checks for vulnerabilities and agentic risk

Overview

This skill is a clearly scoped helper for reading and sending MJZJ private messages through the declared MJZJ API using a user-provided API key.

Install only if you intend to let the agent access your MJZJ private-message account data and send private messages when you ask it to. Treat MJZJ_API_KEY as a sensitive credential and revoke or rotate it if you no longer trust the environment.

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
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • 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)

External Transmission

Medium
Category
Data Exfiltration
Content
> 游标为偏移量字符串：`position`（如 `"0"`、`"20"`）。

```bash
curl -X GET "https://data.mjzj.com/api/message/getConversations?unblocked=true&size=20&position=" \
  -H "Authorization: Bearer $MJZJ_API_KEY" \
  -H "Content-Type: application/json"
```
Confidence
60% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
> 游标为偏移量字符串：`position`（如 `"0"`、`"20"`）。

```bash
curl -X GET "https://data.mjzj.com/api/message/getConversations?unblocked=true&size=20&position=" \
  -H "Authorization: Bearer $MJZJ_API_KEY" \
  -H "Content-Type: application/json"
```
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
> 游标为偏移量字符串：`position`（如 `"0"`、`"20"`）。

```bash
curl -X GET "https://data.mjzj.com/api/message/getConversations?unblocked=true&size=20&position=" \
  -H "Authorization: Bearer $MJZJ_API_KEY" \
  -H "Content-Type: application/json"
```
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
> 游标为偏移量字符串：`position`（如 `"0"`、`"20"`）。

```bash
curl -X GET "https://data.mjzj.com/api/message/getConversations?unblocked=true&size=20&position=" \
  -H "Authorization: Bearer $MJZJ_API_KEY" \
  -H "Content-Type: application/json"
```
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Static analysis

No suspicious patterns detected.