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Security audit

genstory story generator

Security checks for vulnerabilities and agentic risk

Overview

This skill is a straightforward Genstory API helper, but users should know their story prompt is sent to Genstory and the example enables public visibility.

Install only if you are comfortable sending story prompts and related parameters to Genstory. Avoid including secrets, private personal details, or proprietary text, and set public visibility deliberately rather than copying the example blindly.

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
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (2)

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

The skill instructs sending user prompts to an external third-party API using an authenticated request, but it does not require any user-facing disclosure, consent, or data-handling warning before transmission. This can lead to inadvertent sharing of sensitive or regulated data with Genstory, especially because prompts may contain personal, confidential, or proprietary information and the workflow is explicitly designed to exfiltrate that content to a remote service.

Content

No source excerpt is available for this finding.

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
93% confidence
Finding

The example request sets public_visibility to true, but the documentation does not clearly warn users that submitted story content may become publicly accessible. In a story-generation skill, prompts can easily contain sensitive or personal information, so omitting this warning can lead to inadvertent disclosure through publicly visible generated stories.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.