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Security audit

Megaventory

Security checks for vulnerabilities and agentic risk

Overview

Megaventory changes require approval, but the required CLI can also change other agents’ installed skills without this skill explaining that effect.

Review the CLI setup before installing. Use a verified CLI release and consider setting OO_SKILLS_SYNC_DISABLED=1 before every oo invocation to prevent startup skill synchronization. OOMOL mediates access to your business account; verify the connected account and approve exact product or order changes. The remote installer could not be inspected, and upstream source does not establish which release an unpinned installation will deliver.

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
Vulnerability Patterns
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
Findings (3)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
95% confidence
Finding

The supplied chunk performs remote software installation rather than Megaventory operations. Although installation can be a supporting implementation detail, nothing in this chunk establishes that the Oomol CLI supports the declared Megaventory purpose. The downloaded script's contents and any further effects are not visible.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

The fallback pipes a remotely fetched, mutable script directly into Bash without reviewing it or verifying a pinned artifact; the PowerShell alternative uses the same fetch-and-execute pattern. A compromised distribution endpoint could execute arbitrary code with the agent process's permissions, exposing local files and credentials. Its legitimate dependency-setup purpose and missing-CLI condition reduce exposure but do not remove the supply-chain risk.

Content

Scanner excerpt · SKILL.md (reported line 63)May include surrounding context.

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 84)May include surrounding context.

md
- **`OOMOL_INSUFFICIENT_CREDIT`** — OOMOL billing stop. Recharge at `https://console.oomol.com/billing/token-recharge` before retrying.

- **HTTP 402 without `OOMOL_INSUFFICIENT_CREDIT`** — the third-party account itself has no active plan or credit. Report the provider error message as is; do not ask the user to recharge OOMOL.

## Resources