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Security audit

Stream Estate

Security checks for vulnerabilities and agentic risk

Overview

The property-search workflow fits its purpose, but its fallback setup directs the agent to execute an unverified remote installer without a clear user approval step.

Review before enabling automatic setup. Install and verify the CLI yourself, inspect its bundled-skill installation and update behavior, and explicitly approve local changes. OOMOL mediates the connected account, and usage may require credit. The remote installer payload remains unverified; the review found no artifact-backed deception or malicious behavior.

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
95% confidence
Finding

The supplied chunk performs no Stream Estate search or read operation. Its sole behavior is executing an Oomol-hosted installer, and nothing supplied establishes that installation as a supporting implementation detail for Stream Estate access. The downloaded script's contents and any further effects are not available for assessment.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
99% confidence
Finding

The command pipes an unpinned remote script directly into Bash, giving whatever code the endpoint returns the privileges of the executing user without prior verification. A compromised distribution endpoint or malicious installer update could execute arbitrary commands and access local files or credentials; the PowerShell alternative has the same weakness. The legitimate dependency and missing-CLI condition limit exposure but do not establish the downloaded code's integrity.

Content

Scanner excerpt · SKILL.md (reported line 59)May include surrounding context.

The fallback setup executes remote installation scripts without warning the user about third-party code execution or system changes.

Medium
Category
Output Handling
Confidence
95% confidence
Finding

A missing-command error triggers instructions to install third-party software without first obtaining approval for remote code execution or local system changes. Although installation supports the legitimate workflow, a request to read property data does not itself authorize installing software; this finding overlaps with SC2.

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 80)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