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Security audit

Pipedream

Security checks for vulnerabilities and agentic risk

Overview

The Pipedream features fit the stated purpose, but the setup instructions can automatically execute unverified installers and introduce broader agent changes.

Review and verify the CLI installation separately before allowing the agent to run the setup fallback. Check its automatic skill synchronization settings and connect only the intended Pipedream account through OOMOL. The bundled instructions show no malicious behavior, but the remote installers and hosted connector implementation were not verified.

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
99% confidence
Finding

The supplied command performs remote script execution for an apparent Oomol CLI installation and shows no Pipedream search or read functionality. Nothing in the supplied material establishes this installation as a supporting dependency for the declared purpose. The downloaded script's contents and further effects are unknown.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
86% confidence
Finding

The supplied chunk only performs a CLI login and contains no Pipedream-specific operation or indication that this login supports Pipedream access. Authentication could be a supporting implementation detail in a broader workflow, but the provided code does not establish that connection.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

Piping the HTTPS installer directly into bash executes mutable remote content with the invoking account's privileges, without an opportunity to verify or review it first. HTTPS protects transport but does not protect against a compromised distribution server or malicious installer update; the legitimate dependency context reduces suspicion of malicious intent, not the execution risk.

Content

Scanner excerpt · SKILL.md (reported line 60)May include surrounding context.

The setup fallback instructs execution of downloaded installer scripts without a system-integrity warning.

Medium
Category
Output Handling
Confidence
96% confidence
Finding

The setup fallback directs the agent to execute downloaded shell or PowerShell code without prior inspection, integrity verification, or explicit approval for software installation. Although conditional on a missing CLI, this turns an ordinary read request into local code execution; a compromised installer could access files and credentials available to the invoking account.

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 81)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