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Security audit

Lightfield

Security checks for vulnerabilities and agentic risk

Overview

The Lightfield integration is coherent, but its setup can execute unverified downloaded software without a clear approval step.

Review before installing. Install a verified, version-pinned oo CLI separately and require approval for software changes. Review its automatic skill synchronization, and connect Lightfield with only the permissions needed for your reads. The remote installers could not be inspected, so their exact local changes remain uncertain; the bundled artifact does not establish malicious intent.

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
98% confidence
Finding

The supplied code performs remote installer execution rather than Lightfield searching or reading. Nothing in the chunk establishes that installing the Oomol CLI is a supporting requirement for Lightfield access. The fetched script's contents are not supplied, so its further actions cannot be determined.

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, integrity, or version; the PowerShell alternative has the same weakness. If the distribution endpoint or delivery infrastructure is compromised, the installer can execute arbitrary code with the invoking user's privileges, potentially accessing local data and credentials. HTTPS and the legitimate dependency context do not establish artifact integrity.

Content

Scanner excerpt · SKILL.md (reported line 64)May include surrounding context.

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

Medium
Category
Output Handling
Confidence
93% confidence
Finding

When the CLI is missing, the skill directs the agent to install software without first explaining the local changes or obtaining explicit approval. The missing-command condition limits when this occurs, but a user requesting a Lightfield read has not necessarily authorized local software installation or execution of an external installer.

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 85)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