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Security audit

ContactOut

Security checks for vulnerabilities and agentic risk

Overview

This ContactOut helper needs review because its setup runs unverified remote code and its CLI can change other installed agent skills.

Review and install the CLI separately before use. Its documented startup synchronization can be disabled with OO_SKILLS_SYNC_DISABLED=1. Share only lookup identifiers you intend OOMOL and ContactOut to receive, and consider usage charges. No malicious payload was established, but the remote installer was unavailable for inspection.

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
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • 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
Findings (5)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
98% confidence
Finding

The supplied code performs remote script execution, not ContactOut searching or reading. Nothing in the chunk establishes that the Oomol installer is a supporting dependency for ContactOut, and its installation behavior is not disclosed in the description. The downloaded script's contents and 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

The setup instructions pipe a mutable remote script directly into Bash without inspection, version pinning, or independent integrity verification; the PowerShell alternative has the same issue. If the installation endpoint or its delivery infrastructure is compromised, attacker-controlled code would execute with the agent process's local permissions. Restricting installation to a missing-CLI error reduces exposure but does not remove this supply-chain risk.

Content

Scanner excerpt · SKILL.md (reported line 69)May include surrounding context.

The workflow sends lookup payloads to third-party services without a privacy warning and labels read actions safe to run directly.

Medium
Category
Output Handling
Confidence
93% confidence
Finding

The execution workflow instructs the agent to submit action payloads through OOMOL to ContactOut; these payloads can contain email addresses, LinkedIn URLs, or other personal identifiers. The safety section addresses state changes but does not warn that read-only lookups also disclose submitted data to external services.

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 90)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

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 95)May include surrounding context.

md
## Resources

- ContactOut homepage: https://contactout.com
- API documentation: https://api.contactout.com/