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Security audit

TwitterAPI.io

Security checks for vulnerabilities and agentic risk

Overview

The TwitterAPI.io workflow is coherent, but a missing dependency can trigger installation of unverified remote code without clear user approval.

Review and install a verified CLI release separately before allowing this skill to run, and prevent automatic installer execution. Understand that requests use your OOMOL-connected account, and retain the documented approval checks for changes and deletions. Installer contents and their persistent effects could not be verified; the supplied artifact does not establish 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
  • 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 command executes an installer hosted at cli.oomol.com rather than performing TwitterAPI.io operations. Nothing in the supplied chunk establishes that this installation supports the declared purpose. The downloaded script is not supplied, so its specific actions cannot be determined.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

Piping a live HTTPS response directly into bash executes mutable remote code without a pinned version or independent integrity verification. Compromise of the installer endpoint or its distribution infrastructure could therefore execute attacker-controlled commands with the invoking process's privileges; the documented dependency explains the download but does not remove this supply-chain risk.

Content

Scanner excerpt · SKILL.md (reported line 93)May include surrounding context.

The setup workflow executes downloaded installation scripts without warning the user about local system changes or remote-code execution.

Medium
Category
Output Handling
Confidence
93% confidence
Finding

The setup fallback directs the agent to execute a remote installer without requiring approval for local installation or explaining that downloaded code will run with the agent's privileges. Restricting setup to a missing-CLI error reduces unnecessary execution, but an ordinary API request could still lead to unapproved host changes; the declared oo-only tool allowance may constrain execution if strictly enforced.

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 114)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