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Security audit

Adafruit IO

Security checks for vulnerabilities and agentic risk

Overview

The Adafruit IO workflow is coherent, but setup executes unverified downloaded code and leaves persistent agent changes insufficiently disclosed.

Review and install a verified CLI release yourself before use. Decide whether its automatic agent-skill installation and synchronization are acceptable, and disable synchronization if unwanted. Understand that OOMOL mediates account access and feed operations, and retain the required write confirmations. The remote installers' exact contents remain unverified; no malicious intent is established.

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
  • Output HandlingUnvalidated Output Injection, Cross-Context Output, Unbounded Output
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Findings (5)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
97% confidence
Finding

The supplied command installs external CLI software instead of performing an Adafruit IO operation. Nothing in the supplied content establishes this installer as a supporting dependency for the declared functionality. The downloaded script's contents are unavailable, so its further behavior cannot be determined.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
86% confidence
Finding

Authentication could support the declared purpose, but it is the entirety of the supplied code. No Adafruit IO integration or data-handling behavior is shown, so the implemented primary behavior does not substantiate the declared functionality.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

Piping an HTTPS response directly into Bash executes mutable remote content without a pinned version or independently verified integrity. HTTPS protects transport but does not prevent a compromised distribution endpoint or installer from running malicious code on the local machine; this is the same underlying installation risk highlighted by SQP-2.

Content

Scanner excerpt · SKILL.md (reported line 59)May include surrounding context.

The setup workflow executes downloaded installation scripts without warning the user about remote code execution or system changes.

Medium
Category
Output Handling
Confidence
95% confidence
Finding

The missing-CLI fallback directs execution of downloaded shell or PowerShell code without requiring review, integrity verification, or explicit approval for local system changes. Although installing a dependency is relevant to this skill and occurs only conditionally, a compromised installer could execute arbitrary code with the invoking user's privileges.

Content

No source excerpt is available for this finding.

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 80)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