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Security audit

V2rayn

Security checks for vulnerabilities and agentic risk

Overview

The skill is mostly about managing V2RayN, but it asks users to install recurring automation with weak safeguards and includes a broad restart command.

Review carefully before installing. Use the status and log commands on demand, but avoid adding the cron job unless you place the script in a fixed user-owned path with restrictive permissions and know how to remove it. Do not run the restart command with sudo, and prefer a V2RayN-specific quit/reopen method over pkill -f.

A.I.G

Vulnerability Patterns
  • System PersistenceInstalls backdoors, hooks, services, or scheduled tasks that survive the run
  • Insecure Skill Coding PracticesFinds exploitable flaws such as hardcoded secrets or command injection
  • 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
Findings (2)

T06 · System Persistence

Error
Location
SKILL.md:18
Finding

Persistent Scheduled Execution Through an Insufficiently Secured Cron Job

Content
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Remediation
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T09 · Insecure Skill Coding Practices

Warning
Location
SKILL.md:157
Finding

Overbroad Process Termination Using Command-Line Pattern Matching

Content
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Remediation
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SkillSpector

Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
Findings (2)

External Script Fetching

High
Category
Supply Chain
Confidence
90% confidence
Finding

Remote code is downloaded and executed. This bypasses code review and could introduce malicious code.

Content

Scanner excerpt · SKILL.md (reported line 52)May include surrounding context.

md
# Test connection
test_connection() {
    curl -s --max-time 5 -x socks5://127.0.0.1:10808 https://www.google.com -o /dev/null -w "%{http_code}" 2>/dev/null
}

# Get current node info

File System Enumeration

Medium
Category
Data Exfiltration
Confidence
60% confidence
Finding

Code scans file system directories looking for sensitive files. This could be reconnaissance for credential theft.

Content

Scanner excerpt · SKILL.md (reported line 151)May include surrounding context.

5. View Logs

bash
ls -la ~/Library/Application\ Support/v2rayN/guiLogs/
tail -50 ~/Library/Application\ Support/v2rayN/guiLogs/*.log 2>/dev/null | tail -30