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Security audit

Vitally

Security checks for vulnerabilities and agentic risk

Overview

The Vitally integration has clear safeguards for data changes, but its setup instructions can trigger an unverified remote installer without separate user approval.

Review and install the CLI yourself before enabling this skill, including its bundled-skill behavior. Understand that OOMOL handles the Vitally connection, and retain the required approvals for data changes. The remote installer contents were unavailable for inspection; this Review verdict concerns setup control, not evidence of 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
  • 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 chunk performs remote script execution and shows no Vitally data operations or connection between the Oomol installer and the declared Vitally functionality. On the supplied evidence, this is an unrelated installation capability rather than an established supporting implementation detail. The downloaded script's contents and 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

Piping an HTTPS response directly into bash executes mutable remote code without a pinned version, independent integrity verification, or an inspection step; the PowerShell alternative has the same trust problem. A compromised distribution endpoint or installer could execute arbitrary code with the invoking user's permissions, including accessing local data and credentials. The legitimate dependency context and missing-CLI condition reduce exposure but do not eliminate this supply-chain risk.

Content

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

The setup workflow instructs execution of downloaded installation scripts without warning the user about the system-level effects.

Medium
Category
Output Handling
Confidence
92% confidence
Finding

The missing-CLI fallback instructs installation through downloaded scripts without explaining that this executes code locally or requiring approval for changes to the host. The conditional fallback limits exposure, but authorization to perform Vitally operations does not necessarily authorize installing software or modifying the local environment.

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