Back to skill

Security audit

Icypeas

Security checks for vulnerabilities and agentic risk

Overview

The Icypeas workflow is coherent, but its required CLI can change other agent skills without that broader effect being explained here.

Review the CLI's additional skill installation before proceeding. Prefer a verified CLI release and review the fallback installer separately; its contents were unavailable during this assessment. For normal CLI calls, the documented OO_SKILLS_SYNC_DISABLED=1 setting disables startup skill synchronization. Expect requests to pass through OOMOL and approve write payloads before execution. The Review verdict concerns under-disclosed changes to agent skills, 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
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
Findings (3)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
96% confidence
Finding

The supplied code performs remote script execution rather than any visible Icypeas operation. Although dependency installation can be a supporting implementation detail, this chunk establishes no relationship between the Oomol installer and the declared Icypeas functionality. The downloaded script's contents and further effects cannot be determined from the supplied code.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

The setup instructions pipe a mutable remote script directly into Bash without a pinned version or independent integrity verification; the PowerShell alternative has the same execution pattern. Although installing the connector CLI is legitimate and conditional on it being absent, compromise of the distribution endpoint could execute attacker-controlled code with the agent process's permissions, potentially exposing local files and credentials.

Content

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

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