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Security audit

Reverse Contact

Security checks for vulnerabilities and agentic risk

Overview

The contact lookup workflow fits its purpose, but automatic setup executes unverified downloaded code without clear user control.

Review and install the CLI separately before use, and decide whether its automatic agent-skill synchronization is acceptable. Submit only identifiers you intend OOMOL and Reverse Contact to process. The remote installers and exact installed dependency were not inspected, so their full local effects remain uncertain.

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 (5)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
96% confidence
Finding

The supplied code performs remote installation rather than searching or reading Reverse Contact data. Nothing in the chunk establishes the Oomol installer as a supporting dependency for Reverse Contact. The downloaded script's contents are unavailable, so its further behavior cannot be determined.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
86% confidence
Finding

The supplied chunk performs only a login operation; it contains no Reverse Contact search or data-reading behavior. Authentication could be a supporting implementation detail, but this chunk provides no connection between the oo login flow and the declared service.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

The fallback installation pipes a mutable remote script directly into Bash without verifying its contents or integrity; the PowerShell alternative uses the same download-and-execute pattern. If the distribution endpoint or delivery infrastructure is compromised, an attacker can execute code with the agent's local privileges and potentially access credentials or files. The missing-CLI condition limits when this occurs, but HTTPS alone does not prevent distribution-side compromise.

Content

Scanner excerpt · SKILL.md (reported line 56)May include surrounding context.

The enrichment workflow lacks a privacy warning about sending personal identifiers to third-party services.

Medium
Category
Output Handling
Confidence
92% confidence
Finding

The workflow instructs the agent to execute connector actions, including person enrichment using an email, name, or company context. Although it identifies Reverse Contact and OOMOL, it never warns that the supplied personal identifiers will be transmitted to those services, and instead labels untagged actions as safe to run directly.

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 77)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