Security audit

weather-skill-0311

Security checks for vulnerabilities and agentic risk

Overview

This is a simple weather lookup skill, but its install instructions point to a placeholder package name and its live weather request uses unencrypted HTTP.

Review before installing. The weather functionality itself is narrow, but do not follow the placeholder install command unless the publisher replaces it with a verified package name, and prefer a version that uses HTTPS for live weather lookups.

A.I.G

Vulnerability Patterns

Insecure DependenciesIntroduces malicious components through unsafe dependency sources
Insecure Skill Coding PracticesFinds exploitable flaws such as hardcoded secrets or command injection
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

Findings (2)

T09 · Insecure Skill Coding Practices

Warning

Location: scripts/weather.py:35
Finding: Weather Data Transmitted Over Unencrypted HTTP
Content: View full analysis
Remediation: View remediation

T08 · Insecure Dependencies

Note

Location: SKILL.md:27
Finding: Installation Documentation References an Unverified Placeholder Package
Content: View full analysis
Remediation: View remediation

SkillSpector

Vulnerability Patterns

Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
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 (2)

Hidden Instructions

High

Category: Prompt Injection
Confidence: 60% confidence
Finding: Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.
Content: Scanner excerpt · SKILL.md (reported line 1)May include surrounding context.
md
--- name: weather-query version: 1.0.0 description: 查询全球任意城市天气，支持中文城市名

Natural-Language Policy Violations

Low

Category: Not specified by scanner
Confidence: 95% confidence
Finding: The skill includes natural-language output in Chinese in the sample weather description and later emits a Chinese-only usage error message. This imposes a specific language on users without opt-in or any documented locale constraint, which matches the language/locale policy violation criteria.
Content: No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.