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Security audit

xinjianxue-skill-rel_choice-global

Security checks for vulnerabilities and agentic risk

Overview

This skill is a disclosed paid API integration for relationship-analysis reports, with personal-data and credential handling that is mostly well scoped to its stated purpose.

Before installing, be comfortable sharing birth, gender, birthplace/current-location details with www.xinjianxue.com and letting the skill store account-bound API credentials in a dedicated credential store. Each report can consume paid tokens, so use it only when you explicitly want this analysis.

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
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • 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 (1)

Autonomous Decision Making

Medium
Category
Excessive Agency
Confidence
80% confidence
Finding

Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.

Content

Scanner excerpt · SKILL.md (reported line 112)May include surrounding context.

md
Call `POST /api/xinjianxue/ai/license/verify` (include credentials if you have them; body or headers are both accepted). **The only criterion is `pass`:**

- `pass: true` → **already onboarded**: use the APIs directly, and do not ask the user for any credential.
- No credentials / `pass: false` → act on the returned `msg`; **go to Step 1 only once you have confirmed "never onboarded"**. Do not blindly re-apply (re-applying produces an extra license that nobody uses).

### Step 1: Apply for the AI business license (once only)

Static analysis

No suspicious patterns detected.