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Security audit

Twilio

Security checks for vulnerabilities and agentic risk

Overview

The Twilio workflow includes clear confirmation rules, but setup directs the agent to execute unverified downloaded code without separate approval.

Prefer an already installed, trusted oo CLI. Require separate approval and verification before running either installer; its payload and local changes could not be inspected. OOMOL mediates access to your Twilio data. Confirm recipients, content, and possible charges before calls or messages.

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
99% confidence
Finding

The supplied command contains no Twilio interaction and instead executes an installer from an unrelated service. Nothing in the supplied chunk establishes this installation as a supporting requirement for Twilio operations. The downloaded script's further behavior cannot be determined from this chunk.

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 remote script directly into Bash without verifying its contents or release integrity; the PowerShell alternative uses the same execution pattern. Compromise of the installation source could execute arbitrary code with the agent process's permissions, potentially exposing local files and credentials. The documented vendor domain and missing-CLI condition make this legitimate setup context, but do not eliminate the supply-chain risk.

Content

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

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

Medium
Category
Output Handling
Confidence
93% confidence
Finding

After a missing-command error, the skill directs installation without requiring disclosure or approval for executing remote code and changing the local environment. A request to operate Twilio does not necessarily authorize software installation, and the confirmation requirements for Twilio writes do not cover this setup action.

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