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Security audit

Featurebase

Security checks for vulnerabilities and agentic risk

Overview

The Featurebase workflow has clear safeguards, but its fallback setup runs unverified downloaded code without a separate approval step.

Review and approve CLI installation separately, preferably using a verified release. OOMOL mediates your Featurebase requests and account connection. Check the CLI's automatic skill synchronization before first use; its [command reference](https://github.com/oomol-lab/oo-cli/blob/main/docs/commands.md#environment-variables) documents OO_SKILLS_SYNC_DISABLED. Preserve the skill's write and deletion approval requirements. The downloaded installer and remote service implementation remain outside this artifact review.

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 code installs software by executing a remotely fetched script; it does not show any Featurebase functionality. No evidence establishes this installer as a supporting dependency for Featurebase operations. The remote script's contents and subsequent effects are not available for assessment.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

The command pipes a remotely retrieved, mutable script directly into Bash without a pinned version or independent integrity verification; the PowerShell alternative follows the same execution pattern. Compromise of the distribution endpoint or installer supply chain could execute arbitrary code with the invoking account's permissions, although the domain is a relevant dependency source and installation is only a fallback.

Content

Scanner excerpt · SKILL.md (reported line 65)May include surrounding context.

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

Medium
Category
Output Handling
Confidence
92% confidence
Finding

When the CLI is missing, the setup directs the agent to execute third-party installation code without explicitly obtaining approval for local software installation and its system changes. This is conditional rather than routine behavior, and the declared Bash allowlist may restrict execution, but neither establishes informed authorization for the installation.

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 86)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