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Security audit

Airbnb availability

Security checks for vulnerabilities and agentic risk

Overview

This skill is a disclosed StayingAPI integration for checking rental availability, with only normal API-key and network-use cautions.

Before installing, be comfortable sharing listing/date queries with StayingAPI and treating STAYINGAPI_KEY as a secret. Use a stay_test_ sandbox key for evaluation, prefer a secure runtime secret store when available, and avoid committing or syncing files that contain the key.

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 (5)

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

The document explicitly instructs the user to persist STAYINGAPI_KEY across future sessions but does not warn that shell profiles or agent-managed env files may store credentials on disk in plaintext, broaden access to other local processes, or accidentally expose the key via backups and dotfile sync. This is a real security weakness in setup guidance because it normalizes durable storage of a live API secret without any safety controls or least-privilege advice.

Content

No source excerpt is available for this finding.

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 47)May include surrounding context.

Step 3 — verify

bash
curl -s "https://api.stayingapi.com/v1/account" -H "Authorization: Bearer $STAYINGAPI_KEY" | head

A 200 with your account envelope means the key works. A missing/invalid key returns 401 authentication_error (never billed). Full contract: https://api.stayingapi.com/openapi.json.

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 118)May include surrounding context.

Step 3 — verify

bash
curl -s "https://api.stayingapi.com/v1/account" -H "Authorization: Bearer $STAYINGAPI_KEY" | head

A 200 with your account envelope means the key works. A missing/invalid key returns 401 authentication_error (never billed). Full contract: https://api.stayingapi.com/openapi.json.

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · references/auth-setup.md (reported line 34)May include surrounding context.

Step 3 — verify

bash
curl -s "https://api.stayingapi.com/v1/account" -H "Authorization: Bearer $STAYINGAPI_KEY" | head

A 200 with your account envelope means the key works. A missing/invalid key returns 401 authentication_error (never billed). Full contract: https://api.stayingapi.com/openapi.json.

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · references/auth-setup.md (reported line 37)May include surrounding context.

Step 3 — verify

bash
curl -s "https://api.stayingapi.com/v1/account" -H "Authorization: Bearer $STAYINGAPI_KEY" | head

A 200 with your account envelope means the key works. A missing/invalid key returns 401 authentication_error (never billed). Full contract: https://api.stayingapi.com/openapi.json.

Static analysis

No suspicious patterns detected.