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Security audit

Browser Screenshot Send

Security checks for vulnerabilities and agentic risk

Overview

This skill only tells the agent how to send browser screenshots to the user, with no hidden code or unrelated behavior found.

Install is reasonable for browser automation workflows where users expect to receive screenshots in chat. Before using it in shared channels, check that screenshots do not expose private account pages, credentials, customer data, or other sensitive information.

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
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • 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)

Autonomous Decision Making

Medium
Category
Excessive Agency
Confidence
80% confidence
Finding

Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.

Content

Scanner excerpt · SKILL.md (reported line 3)May include surrounding context.

md
---
name: browser-screenshot-send
description: Automatically send browser screenshots to users via message tool. Solves the common issue where browser screenshots are generated but not delivered to the conversation channel. Essential for web automation workflows requiring visual feedback.
---

# Browser Screenshot Send

Static analysis

No suspicious patterns detected.