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Security audit

Minerstat

Security checks for vulnerabilities and agentic risk

Overview

The Minerstat functions fit the stated purpose, but setup directs the agent to execute an unverified online installer without a clear approval step.

Review and install a verified CLI release yourself before allowing agent use. Check its agent-skill synchronization settings because current CLI documentation describes changes beyond this Minerstat skill. Connecting Minerstat entrusts its API credential to OOMOL. The remote installers and hosted connector implementation were not verified; no artifact-backed evidence establishes malicious intent.

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
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • 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
Findings (6)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
99% confidence
Finding

The supplied command performs remote script execution for an Oomol CLI installer, with no visible Minerstat interaction. Installing unrelated software is a materially different capability from the declared read/search purpose. The downloaded script's further behavior cannot be determined from this code chunk.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
92% confidence
Finding

The supplied chunk only performs a login operation and contains no Minerstat search or data-reading behavior. Authentication could be a supporting implementation detail if linked to Minerstat access, but the supplied code establishes no such connection. The assessment does not assume which service oo authenticates to or whether login succeeds.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

Piping an unpinned HTTPS download directly into Bash executes whatever the remote endpoint returns without an independent integrity check or review; the PowerShell alternative has the same weakness. Compromise of the installer endpoint or distribution infrastructure could therefore result in arbitrary code execution with the agent's privileges, although the skill contains no evidence that the provider is malicious.

Content

Scanner excerpt · SKILL.md (reported line 57)May include surrounding context.

First-time setup executes remotely downloaded installation scripts without warning about local system changes.

Medium
Category
Output Handling
Confidence
94% confidence
Finding

A missing CLI causes the workflow to instruct the agent to execute an internet-delivered installer without explicit approval for local system changes. This crosses the boundary from reading Minerstat data to executing code with the agent's local privileges; the missing-command condition limits exposure but does not authorize installation.

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 78)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

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 83)May include surrounding context.

md
## Resources

- Minerstat homepage: https://minerstat.com/
- API documentation: https://api.minerstat.com/docs-coins