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Security audit

视频号 爆款视频生成 | LinkPix

Security checks for vulnerabilities and agentic risk

Overview

The skill is a disclosed WeChat video-generation workflow using qhkit, with normal media upload and paid task submission controls, plus some install/versioning caveats users should review.

Install only if you are comfortable with qhkit/npm tooling, user-level PATH changes, and sending selected media plus a qhkit API key to the provider. Prefer a pinned qhkit version and approve any paid generate call only after reviewing the model, duration, media, language, and estimated credits.

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)

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

The markdown states '默认语言 简体中文', which imposes a specific language choice by default. Under the policy, locale or language constraints should be user-selected, explicitly opt-in, or clearly justified as region-specific; this line does not offer a choice or opt-in.

Content

No source excerpt is available for this finding.

Rp1

Medium
Category
MCP Rug Pull
Confidence
87% confidence
Finding

The skill instructs use of npx @iqinghu/qhkit without pinning an exact package version. That allows whatever version is current at execution time to be fetched and run, creating a supply-chain risk if a malicious or breaking release is published or if dependency resolution changes unexpectedly.

Content

No source excerpt is available for this finding.

Session Persistence

Medium
Category
Rogue Agent
Confidence
82% confidence
Finding

This is a duplicate report of the same session-persistence behavior at the same line: unpacking software into the user's home directory and prepending it to PATH, with guidance to make it persistent across shells. In a skill context, host-environment mutation is more dangerous because the instructions are framed as automatic bootstrap behavior rather than a separately reviewed admin action.

Content

Scanner excerpt · SKILL.md (reported line 60)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
82% confidence
Finding

This is a duplicate report of the same session-persistence behavior at the same line: unpacking software into the user's home directory and prepending it to PATH, with guidance to make it persistent across shells. In a skill context, host-environment mutation is more dangerous because the instructions are framed as automatic bootstrap behavior rather than a separately reviewed admin action.

Content

Scanner excerpt · SKILL.md (reported line 60)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

Rp1

Medium
Category
MCP Rug Pull
Confidence
93% confidence
Finding

The fallback command npx --yes sharp-cli runs the latest resolved package from the registry without version pinning. Because this path is presented as an automatic remediation for image processing, it could cause execution of an unexpected or compromised package version on the analyst/agent host.

Content

No source excerpt is available for this finding.