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Security audit

Jushuitan ERP

Security checks for vulnerabilities and agentic risk

Overview

The ERP controls are clear, but its required CLI can silently install and update skills across agent environments without disclosure here.

Review the CLI's installation and skill-management behavior before proceeding. Install a verified release yourself and consider setting OO_SKILLS_SYNC_DISABLED=1 before invoking it to prevent automatic skill synchronization, as documented in the [CLI reference](https://github.com/oomol-lab/oo-cli/blob/main/docs/commands.md#environment-variables). Keep ERP changes subject to the skill's approval requirements and share only necessary tracking fields. The remote installers and hosted connector implementation remain unverified; no malicious behavior 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
91% confidence
Finding

The visible code functions as a remote installer, not a Jushuitan ERP interface. Installation could be a supporting implementation detail, but the supplied chunk establishes no connection between this installer and the declared ERP functionality. The downloaded script is not provided, so its further behavior cannot be determined.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
97% confidence
Finding

The setup instructions pipe a mutable remote script directly into Bash, and the Windows alternative similarly executes downloaded content immediately. If the distribution endpoint or release pipeline is compromised, attacker-controlled code runs with the user's privileges and could access local credentials or alter files. The missing-CLI condition limits exposure, but HTTPS alone does not establish the integrity of the delivered installer.

Content

Scanner excerpt · SKILL.md (reported line 217)May include surrounding context.

The tracking workflow directs queries to Kuaidi100 without warning that shipment identifiers will be shared with an additional third-party service.

Medium
Category
Output Handling
Confidence
93% confidence
Finding

This is an instruction to use Kuaidi100 for tracking requests, not merely a tool listing. Although it requires checking service availability and connection status, it does not disclose that tracking numbers and any other required query data will be transmitted outside the Jushuitan ERP workflow.

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 238)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