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Security audit

豆包图片生成-免费版

Security checks for vulnerabilities and agentic risk

Overview

This image-generation skill is not malicious, but it needs Review because its stated triggers and capabilities are broader than its simple image-download purpose.

Install only if you are comfortable with a browser-driven Doubao workflow that can use your logged-in Doubao session, send prompts to that service, and save files locally. Use it only for image-generation requests, keep output paths in a dedicated folder, and avoid treating its broad AI/orchestration wording as permission for unrelated command or file operations.

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
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Findings (7)

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The top-level description says to use the skill for broad domains such as AI model calling, intelligent dialogue, agent orchestration, and LLM applications, far beyond image generation. Overbroad invocation language can cause the skill to activate in unrelated contexts and bring along unnecessary tool permissions and risky workflows.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
89% confidence
Finding

The description explicitly states '支持中文交互' while the file does not offer any user opt-in or alternative language choice. This can violate language or locale policy expectations when a skill implicitly constrains interaction language without documenting that it is optional or region-specific.

Content

No source excerpt is available for this finding.

Intent-Code Divergence

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

The document states that the free version does not support workflow automation, but elsewhere presents '自动化执行' as a core feature. Contradictory capability statements create unsafe ambiguity about whether the skill may autonomously perform broader actions, which can lead to over-permissioning or unexpected execution behavior.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

The activation guidance uses vague context triggers like design creation, UI design, poster making, and brand visuals without explicit boundaries or safe-invocation criteria. This ambiguity increases the likelihood that an agent selects the skill for tasks that do not require it, exposing browser, exec, and file-copy behaviors unnecessarily.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The skill is advertised as a narrowly scoped image-generation helper, but later claims broad capabilities including file handling, API integration, command execution, and information retrieval. This scope expansion can cause an agent or reviewer to grant more trust and tool access than users expect, increasing the chance of unintended file or system actions under the guise of image generation.

Content

No source excerpt is available for this finding.

Intent-Code Divergence

Low
Category
Not specified by scanner
Confidence
84% confidence
Finding

The capability matrix marks '提示词增强' as unsupported, yet the skill documentation elsewhere includes '简易提示词优化' support and a full scenario where the agent gives optimization suggestions. While 'optimization' and 'enhancement' may differ slightly, the current wording presents a practical contradiction in intended functionality.

Content

No source excerpt is available for this finding.

Missing User Warnings

Low
Category
Not specified by scanner
Confidence
90% confidence
Finding

The skill instructs downloading images and copying them into local directories, but does not prominently require explicit user consent or clearly delimit safe destination paths. Even if the action seems benign, local file writes are side effects and can overwrite files, place content in sensitive locations, or normalize unsafe file operations for a broadly triggered skill.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.