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Security audit

FAL Image Gen

Security checks for vulnerabilities and agentic risk

Overview

This skill is a straightforward image-generation guide for fal.ai and BytePlus, with expected external API use and no hidden local execution behavior found.

Before using this skill, assume prompts, reference image URLs, and generated outputs may be sent to fal.ai or BytePlus. Avoid confidential images, personal photos, secrets, or proprietary prompts unless you are comfortable with those providers handling them and any related API costs.

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 (1)

Missing User Warnings

Medium
Confidence
95% confidence
Finding
The skill explicitly directs use of third-party image generation services and reference image URLs, but it does not warn users that prompts, images, and related metadata will be transmitted to external providers. This creates a real privacy and data-handling risk, especially if users provide sensitive prompts, personal photos, or proprietary visual assets under the assumption processing is local.