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Security audit

Trigger.dev

Security checks for vulnerabilities and agentic risk

Overview

The Trigger.dev workflow is clearly scoped, but its setup instructions can run an unverified remote installer without separate user approval.

Review and approve CLI installation separately, preferably using a verified, fixed release. Check its automatic skill-synchronization settings before use. OOMOL is part of the credential and request trust boundary. Preserve the skill's confirmation requirements for changes and cancellations. The remote installer payload was unavailable for inspection.

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 targets an Oomol installation endpoint and executes its response locally. Nothing in the chunk connects that installation to Trigger.dev or implements the declared data operations. This is a material purpose and resource mismatch, not an established supporting implementation detail. The remote script's precise effects cannot be determined from the supplied 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 checking its contents, signature, or expected digest; the PowerShell alternative has the same trust problem. Compromise of the installer distribution path could execute arbitrary code with the invoking user's privileges, potentially exposing local credentials and files, although nothing here establishes that the vendor or current installer is malicious.

Content

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

The setup workflow executes remotely downloaded installation scripts without warning about their system-level effects.

Medium
Category
Output Handling
Confidence
94% confidence
Finding

The fallback directs the agent to install software without explicitly requiring approval or explaining the installer's potential filesystem, executable, and shell-configuration changes. Although installation is relevant and conditional, a request to operate Trigger.dev does not necessarily authorize running an installer on the user's machine.

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