Back to skill

Security audit

OpenRouter Vision Agent

Security checks for vulnerabilities and agentic risk

Overview

This is a small, disclosed OpenRouter image-analysis skill, with the main risk being that images and prompts are sent to a third-party API.

Install this only if you are comfortable sending selected image URLs, uploaded image content, and prompts to OpenRouter. Do not use it for private, sensitive, regulated, or confidential images unless you have separately reviewed and accepted the provider’s data-handling terms.

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
Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • 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)

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The skill advertises broad triggers like 'analyze this image' and 'describe this picture,' which are generic requests likely to overlap with normal assistant behavior rather than a narrowly scoped OpenRouter-specific invocation. This can cause unintended routing of user images to a third-party service, increasing privacy and data-handling risk without clear user intent to use OpenRouter.

Content

No source excerpt is available for this finding.

External Transmission

Medium
Category
Data Exfiltration
Confidence
90% confidence
Finding

The skill sends image URLs and prompts to an external API endpoint at openrouter.ai, which is a real data exfiltration boundary. Although this is the intended function of the skill and the file includes a privacy warning, the transmission still creates confidentiality risk if sensitive images, metadata, or user-provided API keys are handled without explicit informed consent.

Content

Scanner excerpt · SKILL.md (reported line 19)May include surrounding context.

Image Analysis

Via curl

bash
curl -s https://openrouter.ai/api/v1/chat/completions \