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Security audit

VerifiedEmail

Security checks for vulnerabilities and agentic risk

Overview

The VerifiedEmail workflow is coherent, but automatic software installation and undisclosed changes to other agent skills warrant review.

Review and install the CLI separately using a fixed, verified release before enabling this skill. Review its automatic skill synchronization; current CLI documentation provides OO_SKILLS_SYNC_DISABLED=1 to disable startup skill writes. Connect only the intended account, expect verification inputs to pass through OOMOL, and check credit usage. The bundled artifact was fully inspected, but remote installers and server-side behavior remain unverified.

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
99% confidence
Finding

The supplied command executes a remote installer rather than searching or reading VerifiedEmail data. Nothing in the supplied code establishes this installation as a supporting dependency for the declared purpose. The downloaded script's contents and further effects are not shown.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
83% confidence
Finding

The supplied chunk performs only an authentication operation; it contains no VerifiedEmail-specific access, search, or reading behavior. Authentication could be a supporting implementation detail if its connection to VerifiedEmail were established, but the supplied content does not establish that connection.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
97% confidence
Finding

Piping a remote installer directly into bash executes mutable network-delivered code without inspecting or independently verifying it. HTTPS protects transport but does not protect against a compromised publisher or hosting infrastructure; the legitimate CLI dependency explains the download but does not eliminate this supply-chain risk.

Content

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

The fallback setup executes remote installation scripts without warning the user about the system-integrity implications.

Medium
Category
Output Handling
Confidence
94% confidence
Finding

The fallback instructs the agent to execute downloaded shell or PowerShell code without an explicit installation approval step or an integrity-verification step. Although installing a required CLI is legitimate and conditional, a compromised installer source could execute arbitrary code with the invoking user's privileges.

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