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Security audit

Lusha

Security checks for vulnerabilities and agentic risk

Overview

The Lusha workflow is coherent, but automatic remote installation and undisclosed changes to agent skills warrant review.

Review and approve CLI installation separately rather than allowing the missing-command fallback to execute downloaded scripts automatically. The installer payload remains unverified. Also review the CLI's automatic agent-skill changes; its command reference documents OO_SKILLS_SYNC_DISABLED=1 to disable startup synchronization. [Command reference](https://github.com/oomol-lab/oo-cli/blob/main/docs/commands.md) Using this integration entrusts OOMOL with your connected Lusha account and submitted queries.

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 command runs an Oomol installer rather than searching or reading Lusha data. Although dependency installation can be a supporting implementation detail, the supplied chunk establishes no relationship between this installer and the declared Lusha functionality. The downloaded script's contents and further effects are not available for inspection.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

The command streams a remotely fetched, unpinned script directly into Bash without independent integrity verification or review; the PowerShell alternative uses the same execution pattern. A compromised distribution endpoint could execute arbitrary code with the invoking user's access, including access to local files and credentials. HTTPS and the legitimate CLI dependency reduce suspicion of malicious intent but do not eliminate this supply-chain risk.

Content

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

Automatic setup executes downloaded installer scripts without warning about system changes or obtaining approval.

Medium
Category
Output Handling
Confidence
94% confidence
Finding

A missing CLI triggers instructions to install software without first obtaining approval or explaining the resulting system changes. Although conditional setup is appropriate to the workflow, authorization to retrieve Lusha data does not necessarily authorize installing executable software on the host.

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