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Security audit

WorkOS

Security checks for vulnerabilities and agentic risk

Overview

The WorkOS workflow has clear safeguards, but automatic setup can execute unverified installers and make broader agent changes without clear approval.

Review this skill's setup before enabling it. Install a verified CLI release separately, approve its local changes, and check or disable automatic skill synchronization using the [CLI controls](https://github.com/oomol-lab/oo-cli/blob/main/docs/commands.md#environment-variables). Connecting WorkOS entrusts OOMOL with access to the selected account. Keep the skill's explicit approval requirements for account and membership changes. Remote installer contents and hosted behavior 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 (4)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
99% confidence
Finding

The supplied command executes an installer hosted at cli.oomol.com and contains no WorkOS operations or demonstrated WorkOS integration. Installing this unrelated CLI is materially different from the declared purpose, not an established supporting implementation detail. The downloaded script's contents and further effects are not available in the supplied chunk.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

Piping an unpinned remote script directly into bash executes its contents without prior inspection or independent integrity verification. Compromise of the script distribution infrastructure could therefore yield arbitrary code execution with the user's privileges; the legitimate connector setup context explains the download but does not remove this supply-chain risk.

Content

Scanner excerpt · SKILL.md (reported line 68)May include surrounding context.

Fallback setup executes a downloaded installation script without warning about local system changes.

Medium
Category
Output Handling
Confidence
94% confidence
Finding

The fallback directs the agent to install software by immediately executing downloaded code, without first obtaining approval for local system changes. Although conditional setup reduces exposure, a request to operate WorkOS does not necessarily authorize installation, and the scripts execute 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 89)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