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Security audit

Newsletter Generator

Security checks for vulnerabilities and agentic risk

Overview

This is a low-risk newsletter-writing skill with distracting sales/payment copy but no executable code or high-impact authority.

Install only if you want a basic newsletter-writing prompt skill. Be aware that the artifact contains prominent third-party payment and Telegram upsell text, and the advertised Pro scripts/templates are not included in the inspected package.

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
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • 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
Findings (1)

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
93% confidence
Finding

The skill exposes very broad invocation examples without clear boundaries, exclusions, or trigger conditions, which can cause an agent to activate this skill in loosely related contexts involving emails, writing, marketing, or scheduling. In an agentic environment, overbroad routing increases the chance of inappropriate tool selection, prompt hijacking surface, and unintended exposure to the embedded commercial/payment content instead of staying focused on the user’s task.

Content

No source excerpt is available for this finding.