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Security audit

agentbox

Security checks for vulnerabilities and agentic risk

Overview

The skill is a disclosed research-and-reporting helper that uses an external CLI for web/data lookup, notes, reports, and user-directed file edits.

Install this only if you want agents to use the agentbox CLI for web research, quotes/markets, sourced notes, report files, and text-file edits. Be aware it can write files when --apply is used and it keeps local task state under ~/.agentbox unless AGENTBOX_HOME is changed. API keys are optional and should be set only by you, not pasted into chat.

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
  • Rogue AgentSelf-Modification, Session Persistence
  • 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)

Session Persistence

Medium
Category
Rogue Agent
Confidence
60% confidence
Finding

Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.

Content

Scanner excerpt · SKILL.md (reported line 8)May include surrounding context.

md
read pages, look up facts with source URLs, compare prices and products,
  extract prices/tables/dates/people from pages, get stock, index, FX and
  crypto quotes (incl. Taiwan .TW), check Polymarket odds, do arithmetic, get
  today's date, keep notes with sources, write a sourced Markdown report that
  passes a template check, and edit text files safely. Use when a task needs
  facts from the web, current numbers, citations, a report file, or a file
  edit. Do not use for small talk, opinions, or answers that need no source,