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Security audit

Lever

Security checks for vulnerabilities and agentic risk

Overview

The Lever integration fits its purpose, but setup can execute unverified remote code and introduce broader agent changes without clear approval.

Review the CLI installation separately before allowing automatic setup, and approve a specific verified release. Decide whether you want additional skills installed across your agents; the CLI documents OO_SKILLS_SYNC_DISABLED to suppress startup synchronization in its [command reference](https://github.com/oomol-lab/oo-cli/blob/main/docs/commands.md#environment-variables). Connect only the intended Lever account and confirm note-writing payloads. Installer contents and hosted connector behavior remain outside the inspected artifact; no malicious behavior was established.

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
96% confidence
Finding

The supplied chunk performs remote installer execution rather than interacting with Lever. Although installation can be a supporting implementation detail, the provided content establishes no relationship between this installer and the declared Lever functionality. The remote script's contents and any further effects cannot be determined from this chunk.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

Piping a mutable remote installer directly into bash executes its contents with the agent's local privileges without integrity verification or review. HTTPS protects transport but does not prevent malicious changes following compromise of the distribution service; the conditional setup trigger reduces exposure frequency, not the consequences of execution.

Content

Scanner excerpt · SKILL.md (reported line 60)May include surrounding context.

The setup workflow executes remotely downloaded installer scripts without warning about local system changes.

Medium
Category
Output Handling
Confidence
93% confidence
Finding

The missing-CLI fallback directs the agent to execute remote installation scripts without requiring explicit approval for local code execution and system changes. Although dependency setup is relevant to the skill, authorization to access Lever does not necessarily authorize installing software; the write-confirmation rules only explicitly cover Lever state changes.

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 81)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