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Security audit

Help Scout Docs

Security checks for vulnerabilities and agentic risk

Overview

The Help Scout reading functions fit their purpose, but setup directs the agent to execute downloaded software without an approval or integrity check.

Review and approve the CLI installation separately before allowing automatic setup. Inspect and verify its installer, and review its automatic agent-skill synchronization settings. Connect only the Help Scout account you intend to use. The bundled instructions show no malicious payload, but the remote installer and hosted connector implementation remain unverified.

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 (4)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
98% confidence
Finding

The supplied command performs remote installer execution rather than searching or reading Help Scout Docs. Nothing in the supplied chunk establishes this installer as a supporting dependency for the declared purpose. The downloaded script's contents and any further effects are not available for assessment.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

Piping a mutable remote script directly into bash executes its contents without prior inspection or independent integrity verification; the PowerShell alternative has the same issue. A compromised distribution endpoint or malicious installer update could execute arbitrary commands with the agent process's permissions, potentially exposing accessible credentials and files.

Content

Scanner excerpt · SKILL.md (reported line 60)May include surrounding context.

The setup workflow executes a remotely downloaded installer without warning about its system-level effects.

Medium
Category
Output Handling
Confidence
94% confidence
Finding

The fallback directs the agent to install software when the CLI is missing, without requiring approval or explaining that downloaded code will execute and may modify the local environment. This expands a read-only documentation request into local code execution; 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 81)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