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Security audit

Fastapi Code Review

Security checks for vulnerabilities and agentic risk

Overview

This is a Markdown-only FastAPI code-review skill, and the flagged network URLs are example code snippets rather than hidden data transmission.

Install this skill if you want FastAPI review guidance. It will encourage the agent to inspect your FastAPI code and verify findings with file and line evidence, but it does not add executables or hidden network behavior.

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
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/async.md (reported line 228)May include surrounding context.

md
@router.get("/weather")
async def get_weather(city: str):
    response = requests.get(f"https://api.weather.com/{city}")  # BLOCKS!
    return response.json()

# GOOD - httpx async

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/async.md (reported line 237)May include surrounding context.

md
@router.get("/weather")
async def get_weather(city: str):
    response = requests.get(f"https://api.weather.com/{city}")  # BLOCKS!
    return response.json()

# GOOD - httpx async

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/async.md (reported line 245)May include surrounding context.

md
@router.get("/weather")
async def get_weather(city: str):
    response = requests.get(f"https://api.weather.com/{city}")  # BLOCKS!
    return response.json()

# GOOD - httpx async

Static analysis

No suspicious patterns detected.