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Security audit

Harvest Time Reporting

Security checks for vulnerabilities and agentic risk

Overview

The skill is a Harvest API reference, but it exposes broad business, financial, and account-changing actions without clear guardrails.

Install only if you intend agents to access and potentially modify Harvest data. Use a least-privileged Harvest token, avoid broad admin tokens where possible, and require explicit user confirmation before creating, updating, deleting, sending invoices, or changing company/account records.

A.I.G

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

SkillSpector

Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
Findings (85)

Missing User Warnings

Medium
Confidence
91% confidence
Finding
The skill documents broad access to third-party endpoints handling time tracking, users, invoices, contacts, company, and reporting data, but provides no privacy, retention, consent, or data-sharing notice. In an agent setting, omission of these warnings can lead operators to transmit sensitive business and personal data to an external SaaS without adequate awareness or governance.

External Transmission

Medium
Category
Data Exfiltration
Content
## API Reference

Base URL: `https://api.harvestapp.com/v2`

### Time Entries
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
## API Reference

Base URL: `https://api.harvestapp.com/v2`

### Time Entries
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
## API Reference

Base URL: `https://api.harvestapp.com/v2`

### Time Entries
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
## API Reference

Base URL: `https://api.harvestapp.com/v2`

### Time Entries
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
## API Reference

Base URL: `https://api.harvestapp.com/v2`

### Time Entries
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
## API Reference

Base URL: `https://api.harvestapp.com/v2`

### Time Entries
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
## API Reference

Base URL: `https://api.harvestapp.com/v2`

### Time Entries
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
## API Reference

Base URL: `https://api.harvestapp.com/v2`

### Time Entries
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
## API Reference

Base URL: `https://api.harvestapp.com/v2`

### Time Entries
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
## API Reference

Base URL: `https://api.harvestapp.com/v2`

### Time Entries
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
## API Reference

Base URL: `https://api.harvestapp.com/v2`

### Time Entries
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
## API Reference

Base URL: `https://api.harvestapp.com/v2`

### Time Entries
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
## API Reference

Base URL: `https://api.harvestapp.com/v2`

### Time Entries
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
## API Reference

Base URL: `https://api.harvestapp.com/v2`

### Time Entries
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
## API Reference

Base URL: `https://api.harvestapp.com/v2`

### Time Entries
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
## API Reference

Base URL: `https://api.harvestapp.com/v2`

### Time Entries
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
## API Reference

Base URL: `https://api.harvestapp.com/v2`

### Time Entries
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
## API Reference

Base URL: `https://api.harvestapp.com/v2`

### Time Entries
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
## API Reference

Base URL: `https://api.harvestapp.com/v2`

### Time Entries
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
## API Reference

Base URL: `https://api.harvestapp.com/v2`

### Time Entries
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
## API Reference

Base URL: `https://api.harvestapp.com/v2`

### Time Entries
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
## API Reference

Base URL: `https://api.harvestapp.com/v2`

### Time Entries
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
## API Reference

Base URL: `https://api.harvestapp.com/v2`

### Time Entries
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
## API Reference

Base URL: `https://api.harvestapp.com/v2`

### Time Entries
Confidence
50% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Static analysis

No suspicious patterns detected.