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Security audit

Cochrane

Security checks for vulnerabilities and agentic risk

Overview

A Cochrane reading request can trigger software installation without a clear approval step.

Review the setup behavior before installing. Use an independently verified, pinned CLI installation and require approval before any fallback installer runs. Consider the CLI's bundled-skill installation and OOMOL account access. The package shows no credential theft or destructive intent, but its external installer and hosted implementation remain outside the inspected artifact.

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 (5)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
98% confidence
Finding

The fallback expands a Cochrane read request into downloading and executing an installer that can modify the local system, without requiring explicit user approval. Installing a connector dependency is a legitimate operational purpose, but it does not justify implicitly authorizing remote code execution; this overlaps with the installer findings below.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
96% confidence
Finding

The supplied chunk only initiates authentication; it contains no Cochrane search or reading behavior and does not establish that the login supports Cochrane access. Its demonstrated purpose therefore differs materially from the declared purpose. The command alone does not establish credential theft or data exfiltration.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
99% confidence
Finding

The command pipes a mutable remote script directly into Bash without a pinned version or independent integrity verification. HTTPS protects transport but does not prevent a compromised distribution endpoint from supplying code that accesses local files, credentials, or other resources available to the executing account.

Content

Scanner excerpt · SKILL.md (reported line 58)May include surrounding context.

The fallback setup instructs the agent to execute a downloaded installer without warning the user about remote code execution and local system changes.

Medium
Category
Output Handling
Confidence
98% confidence
Finding

The setup instructions direct the agent to execute downloaded shell or PowerShell code without an explicit consent checkpoint or disclosure of local system changes. Although conditional on a missing dependency, following these instructions can execute compromised installer content with the agent process's permissions.

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 79)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