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Security audit

ioffice-mcp

Security checks for vulnerabilities and agentic risk

Overview

This skill is a disclosed iOffice MCP integration with powerful workplace-management actions, but the behavior is coherent with its stated purpose and includes write-confirmation safeguards.

Install only if you are authorized to automate your employer's iOffice/Eptura tenant. Use a least-privileged token where possible, verify the npm package or source repository, and be cautious with delete, approval, check-in/out, delivery, and user-management actions because they affect real workplace records.

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
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Findings (3)

MCP Config Access

High
Category
Agent Snooping
Confidence
95% confidence
Finding

Skill accesses MCP server configuration files (mcp.json). MCP configs contain server URLs, authentication tokens, and tool definitions — reading them allows the skill to discover and potentially abuse other tool integrations.

Content

Scanner excerpt · SKILL.md (reported line 17)May include surrounding context.

Option A — npx (recommended)

Add to .mcp.json in your project or ~/.claude/mcp.json:

json
{

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The trigger text includes a broad catch-all condition: 'any request involving workplace management in iOffice.' That can cause the skill to activate on loosely related prompts and expose powerful read/write workplace-management actions, increasing the chance of unintended tool use on sensitive tenant data. The risk is amplified because the skill supports creation, update, deletion, check-in/out, approval, and delivery workflows across buildings, users, visitors, reservations, moves, and mail.

Content

No source excerpt is available for this finding.

Autonomous Decision Making

Medium
Category
Excessive Agency
Confidence
75% 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 165)May include surrounding context.

md
The 18 read tools — every `io_list_*` and `io_get_*` across the nine resource
groups — take `view: "compact" | "full"`, and **`compact` is the default**: the
parameter is optional, and omitting it gives you the slim shape without asking
for it.

**Compact strips media; it does not project fields.** No hand-written field

Static analysis

No suspicious patterns detected.