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Security audit

Nutrient DWS

Security checks for vulnerabilities and agentic risk

Overview

The account operations have clear approval safeguards, but setup can execute changing remote code and introduce persistent agent skills without clearly explaining those effects.

Review the setup behavior before enabling this skill. Install a reviewed, pinned CLI yourself and disable startup skill synchronization with OO_SKILLS_SYNC_DISABLED=1 if those agent-directory changes are unwanted. Connecting Nutrient DWS entrusts OOMOL with provider access; retain the required approvals and prefer restricted, short-lived tokens. The remote installers and connector implementation were unavailable for inspection. The supplied static scan reported no findings, but that does not resolve these concrete setup concerns.

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
97% confidence
Finding

The supplied chunk performs remote CLI installation rather than Nutrient DWS data operations. Dependency installation could be a supporting implementation detail, but nothing supplied establishes that this Oomol installer supports the declared purpose. The downloaded script is not included, so its additional effects cannot be determined.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
99% confidence
Finding

The command pipes a mutable remote script directly into Bash without version pinning or independent integrity verification; the PowerShell alternative has the same execution pattern. If the distribution endpoint or publishing infrastructure is compromised, attacker-controlled code could execute with the agent process's permissions and access local files or credentials. The endpoint is relevant to the documented CLI dependency, but that legitimate purpose does not eliminate the supply-chain risk.

Content

Scanner excerpt · SKILL.md (reported line 58)May include surrounding context.

The setup workflow executes remotely downloaded installation scripts without a user warning.

Medium
Category
Output Handling
Confidence
96% confidence
Finding

When the CLI is missing, the setup instructions direct the agent to execute a remote installer without first obtaining explicit approval for local software installation. Confirmation requirements for Nutrient DWS write operations do not cover this separate local side effect, although the missing-CLI condition limits when it occurs.

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 79)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