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Security audit

PassSlot

Security checks for vulnerabilities and agentic risk

Overview

The PassSlot operations have clear approval safeguards, but setup can execute unverified downloaded code and introduce persistent agent changes without clear user control.

Review setup before use and install a verified CLI release yourself. OOMOL mediates your PassSlot access, so connect only the account permissions needed. The publisher documents OO_SKILLS_SYNC_DISABLED=1 to prevent automatic skill-file synchronization in its [command reference](https://github.com/oomol-lab/oo-cli/blob/main/docs/commands.md#environment-variables). Keep the skill's approval requirements for writes and deletion. The downloaded installers were unavailable for inspection, so their exact effects 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 (4)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
96% confidence
Finding

The supplied code performs remote installer execution rather than any visible PassSlot operation. Although installation can be a supporting implementation detail, nothing supplied establishes that this installer supports PassSlot. The remote script's contents and any additional 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 invoking user's privileges, without version pinning or artifact verification. HTTPS protects transport but does not prevent a compromised hosting service or publisher from supplying code that steals accessible credentials or modifies local files; the PowerShell example has the same underlying risk.

Content

Scanner excerpt · SKILL.md (reported line 62)May include surrounding context.

The setup workflow executes downloaded installer scripts without warning the user about remote code execution and local system changes.

Medium
Category
Output Handling
Confidence
94% confidence
Finding

When the CLI is missing, the skill directs execution of remotely downloaded shell or PowerShell code without first obtaining informed approval for local software installation. The setup is conditional and relevant to the task, but it crosses from PassSlot operations into potentially broad local system changes without an explicit consent boundary.

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 83)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