ClawHub
Back to skill

Security audit

Vgl

Security checks for vulnerabilities and agentic risk

Overview

This skill is a structured prompt-writing guide for Bria image generation, and its external API example is disclosed and aligned with that purpose.

Before using the API example, confirm you intend to send the prompt contents to Bria and use an API key only in an environment you control. Installing the skill itself appears low risk because it is documentation-only and does not execute code.

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)

External Transmission

Medium
Category
Data Exfiltration
Confidence
60% 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 263)May include surrounding context.

  1. Null for irrelevant - Human-specific fields should be null for non-human objects

curl Example

bash
curl -X POST "https://engine.prod.bria-api.com/v2/image/generate" \

Static analysis

No suspicious patterns detected.