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Security audit

EODHD APIs

Security checks for vulnerabilities and agentic risk

Overview

The data-reading workflow is coherent, but its setup can execute unverified online code without a clear approval step.

Review and approve CLI installation separately, preferably using a fixed, verified release. Consider whether you want its automatic skill synchronization; the documented OO_SKILLS_SYNC_DISABLED setting can disable it. OOMOL brokers your EODHD access and may charge for requests. The external installers and connector implementation remain unverified; the inspected artifact does not establish intentional harm.

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 supplied command performs remote script execution rather than searching or reading EODHD data. No EODHD endpoint or EODHD-specific functionality appears in the code, and the description does not disclose installation of an unrelated CLI. The downloaded script's contents are not supplied, so its further effects cannot be determined.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
85% confidence
Finding

The supplied chunk performs only a login operation; it does not search, read, or otherwise interact with EODHD APIs. Authentication could be a supporting implementation detail if the CLI were shown to provide EODHD access, but the supplied content establishes no such connection.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

The command pipes a mutable network response directly into Bash without version pinning or independent integrity verification; the PowerShell alternative has the same execution pattern. If the distribution endpoint or delivery chain is compromised, attacker-controlled code could access local files and credentials or modify the environment, although the supplied content does not establish that the endpoint is malicious.

Content

Scanner excerpt · SKILL.md (reported line 62)May include surrounding context.

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

Medium
Category
Output Handling
Confidence
96% confidence
Finding

The missing-CLI fallback directs the agent to install software by executing downloaded code without first obtaining approval for local system changes. Although conditional and relevant to setup, this expands a data-reading task into arbitrary code execution with the invoking user'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 83)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