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Security audit

Mocean

Security checks for vulnerabilities and agentic risk

Overview

The Mocean workflow has sensible controls, but its setup executes unverified downloads and its CLI can silently install additional agent skills.

Review the CLI setup before installing. Prefer a verified, pinned CLI release and explicitly approve its installation. For compatible versions, set OO_SKILLS_SYNC_DISABLED=1 before running oo to prevent additional agent-skill installation. Confirm SMS recipients, message text, and charges, and consider that OOMOL processes the submitted data. The remote installers were unavailable for inspection; no malicious payload was 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 (4)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
99% confidence
Finding

The supplied command performs no visible Mocean operation. Instead, it executes a third-party installer without any demonstrated role in supporting the declared Mocean functionality. The installer's contents and downstream effects are not provided, so those effects cannot be determined.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
97% confidence
Finding

Piping an unpinned HTTPS response directly into bash executes the current remote content without prior inspection or independent integrity verification. Compromise of the installer distribution path could therefore lead to arbitrary code execution, local data theft, or persistent modifications, although the command is only proposed when the CLI is missing.

Content

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

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

Medium
Category
Output Handling
Confidence
92% confidence
Finding

The missing-CLI fallback directs installation through immediate execution of downloaded shell or PowerShell content without an explicit installation approval step or integrity verification. Although this is conditional setup rather than routine operation, it can execute attacker-controlled code with the agent's privileges if the distribution endpoint is compromised; the declared oo-only tool restriction may limit execution if enforced.

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