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Security audit

Vidu Q2 爆款视频复刻 | LinkPix

Security checks for vulnerabilities and agentic risk

Overview

This skill is coherent for using Qinghu/LinkPix video generation, with expected media uploads, API-key setup, and dependency installation disclosed to the user.

Install only if you are comfortable giving qhkit a Qinghu API key and uploading the referenced videos or product images to that service. Prefer a preinstalled or pinned qhkit version, review any generated script before spending credits, and use a scoped or revocable API key when possible.

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
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Rogue AgentSelf-Modification, Session Persistence
  • 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 (5)

Rp1

Medium
Category
MCP Rug Pull
Confidence
90% confidence
Finding

The skill instructs the agent to execute npx @iqinghu/qhkit without pinning an exact package version. That permits whatever version is latest at execution time to be fetched and run, creating supply-chain risk and making behavior non-reproducible if the upstream package is compromised or changes unexpectedly.

Content

No source excerpt is available for this finding.

Session Persistence

Medium
Category
Rogue Agent
Confidence
85% confidence
Finding

This duplicate finding points to the same persistence behavior: unpacking Node into a user-controlled directory and prepending it to PATH, with guidance to make the change survive across commands. Persistent environment mutation is risky because it changes the host for future tasks and can enable unintended execution of newly installed binaries.

Content

Scanner excerpt · SKILL.md (reported line 64)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
85% confidence
Finding

This duplicate finding points to the same persistence behavior: unpacking Node into a user-controlled directory and prepending it to PATH, with guidance to make the change survive across commands. Persistent environment mutation is risky because it changes the host for future tasks and can enable unintended execution of newly installed binaries.

Content

Scanner excerpt · SKILL.md (reported line 64)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

L076 instructs the agent that CLI messages are already user-facing Chinese and says to relay them directly to the user. This imposes a specific language on user-facing output without offering language choice or documenting a justified locale constraint.

Content

No source excerpt is available for this finding.

Rp1

Medium
Category
MCP Rug Pull
Confidence
93% confidence
Finding

The command npx --yes sharp-cli pulls and executes an unpinned package from the registry at runtime. If the package or one of its dependencies is malicious or compromised, the agent may execute attacker-controlled code on the host during image processing.

Content

No source excerpt is available for this finding.