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Security audit

Accurate weather forecasts using Open-Meto API (no key required)

Security checks for vulnerabilities and agentic risk

Overview

This skill is a simple weather helper that uses documented Open-Meteo API calls and does not install code, persist access, or handle credentials.

Before installing, be comfortable with the fact that city or location searches will be sent to Open-Meteo to retrieve weather data. Avoid entering sensitive private locations if that disclosure is a concern.

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 (3)

External Transmission

Medium
Category
Data Exfiltration
Content
| Action | Endpoint |
|--------|----------|
| Geocode city to lat/lon | `GET https://geocoding-api.open-meteo.com/v1/search?name={city}&count=1&language=en` |
| Current + 7-day forecast | `GET https://api.open-meteo.com/v1/forecast?latitude={lat}&longitude={lon}&current=temperature_2m,relative_humidity_2m,apparent_temperature,weather_code,wind_speed_10m,wind_direction_10m,precipitation&daily=temperature_2m_max,temperature_2m_min,precipitation_sum,precipitation_probability_max,sunrise,sunset,wind_speed_10m_max,weather_code&timezone=auto` |

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

Missing User Warnings

Low
Confidence
86% confidence
Finding
This markdown file describes calling Open-Meteo and its geocoding endpoint using the user's requested location, which transmits user input to a third-party service. While the network use is central to the skill's purpose, the description does not explicitly warn users that their queried location will be sent to external APIs.

Natural-Language Policy Violations

Low
Confidence
93% confidence
Finding
The documented geocoding request includes `language=en`, which forces English in returned place data. The file does not indicate that this is optional, configurable, or justified by a region-specific requirement, so it appears to violate the language/locale policy.