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Security audit

FinChina

Security checks for vulnerabilities and agentic risk

Overview

The FinChina workflow is coherent, but its setup executes unverified remote software and leaves persistent changes to agent skills insufficiently disclosed.

Review and install a verified CLI release yourself before enabling this skill. Consider disabling startup skill synchronization with OO_SKILLS_SYNC_DISABLED=1, as documented in the [CLI reference](https://github.com/oomol-lab/oo-cli/blob/main/docs/commands.md#environment-variables). Queries use your connected account through OOMOL and may consume credits. The exact remote installers and connector implementation were not verified.

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 code executes an installer from an Oomol domain rather than searching or reading FinChina data. No connection establishing this installation as a supporting dependency for the declared purpose is shown. The downloaded script is not supplied, so its further behavior cannot be assessed.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

The command pipes an unpinned remote script directly into bash, allowing its contents to execute without prior inspection or integrity verification. HTTPS protects transport but does not protect against a compromised distribution endpoint or malicious upstream change; the missing-CLI condition limits exposure but not the resulting execution privileges.

Content

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

The setup workflow executes remote installation scripts without a system-integrity warning.

Medium
Category
Output Handling
Confidence
90% confidence
Finding

The fallback setup directs execution of remote shell and PowerShell installers without requiring review, integrity verification, or explicit approval for local software installation. Although conditional and legitimately related to setup, this can turn a missing dependency into arbitrary code execution with the invoking user's privileges if the installer source is compromised; this overlaps with SC2 rather than representing a separate exploit.

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