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Security audit

AI电商模特换装 | AI换装 | 服装试穿 | 换装工具 | LinkPix

Security checks for vulnerabilities and agentic risk

Overview

This skill is a disclosed LinkPix/qhkit image-generation workflow, with ordinary dependency and account setup risks but no evidence of hidden or malicious behavior.

Before installing, confirm you are comfortable using the qhkit/LinkPix service, uploading garment/model images to it, and providing its API token. Prefer a normal vetted qhkit installation over ad-hoc npx use, and approve any Node or PATH changes explicitly if your environment lacks Node.

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
  • Rogue AgentSelf-Modification, Session Persistence
  • 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
Findings (6)

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The manifest description says the skill 'must trigger' whenever a user asks for model try-on, outfit display, or flat-lay-to-model effects, and then lists broad keywords such as '换装' and '上身图'. These phrases are common enough in general e-commerce/image-editing requests that they can overlap with adjacent skills, and the file does not provide negative examples or clear non-trigger conditions.

Content

No source excerpt is available for this finding.

Rp1

Medium
Category
MCP Rug Pull
Confidence
84% confidence
Finding

The skill recommends falling back to npx @iqinghu/qhkit <命令> ... without pinning a specific package version. That causes runtime retrieval of whatever package version is current at execution time, creating supply-chain risk and making behavior non-reproducible if the upstream package is compromised or a breaking/malicious release is published.

Content

No source excerpt is available for this finding.

Session Persistence

Medium
Category
Rogue Agent
Confidence
80% confidence
Finding

The skill directs the agent to install a Node binary into $HOME/.local/lib and modify PATH, which introduces persistent executable changes in the user environment outside the task's immediate scope. Even though the download includes checksum verification, the behavior still alters the session/user environment and can outlive the current task, increasing attack surface and violating least surprise.

Content

Scanner excerpt · SKILL.md (reported line 55)May include surrounding context.

Linux 二进制安装(装到用户目录,无需 root;先校验官方 SHA256 再解包):

cd /tmp && curl -fsSLO https://nodejs.org/dist/v22.22.3/node-v22.22.3-linux-x64.tar.xz cd /tmp && curl -fsSL https://nodejs.org/dist/v22.22.3/SHASUMS256.txt | grep ' node-v22.22.3-linux-x64.tar.xz$' | sha256sum -c - mkdir -p "$HOME/.local/lib" && tar -xJf /tmp/node-v22.22.3-linux-x64.tar.xz -C "$HOME/.local/lib" export PATH="$HOME/.local/lib/node-v22.22.3-linux-x64/bin:$PATH"

text

Session Persistence

Medium
Category
Rogue Agent
Confidence
80% confidence
Finding

The skill directs the agent to install a Node binary into $HOME/.local/lib and modify PATH, which introduces persistent executable changes in the user environment outside the task's immediate scope. Even though the download includes checksum verification, the behavior still alters the session/user environment and can outlive the current task, increasing attack surface and violating least surprise.

Content

Scanner excerpt · SKILL.md (reported line 55)May include surrounding context.

Linux 二进制安装(装到用户目录,无需 root;先校验官方 SHA256 再解包):

cd /tmp && curl -fsSLO https://nodejs.org/dist/v22.22.3/node-v22.22.3-linux-x64.tar.xz cd /tmp && curl -fsSL https://nodejs.org/dist/v22.22.3/SHASUMS256.txt | grep ' node-v22.22.3-linux-x64.tar.xz$' | sha256sum -c - mkdir -p "$HOME/.local/lib" && tar -xJf /tmp/node-v22.22.3-linux-x64.tar.xz -C "$HOME/.local/lib" export PATH="$HOME/.local/lib/node-v22.22.3-linux-x64/bin:$PATH"

text

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

The instructions force use of the domestic Chinese site/account flow and explicitly tell the agent to steer users away from the international site unless they insist. This can misroute users to a different regional service, causing credential handling, privacy, compliance, or data-sovereignty issues when users did not knowingly opt into that region-specific platform.

Content

No source excerpt is available for this finding.

Vague Triggers

Low
Category
Not specified by scanner
Confidence
87% confidence
Finding

The '何时触发' section gives sample utterances, but it does not define when the skill should not trigger or how to distinguish this skill from neighboring image-editing skills. Without explicit boundaries, routine requests about changing model style or clothing visuals may invoke this skill unintentionally.

Content

No source excerpt is available for this finding.