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Security audit

Douyin Video Downloader

Security checks for vulnerabilities and agentic risk

Overview

This is a simple instructional skill for downloading Douyin videos, with privacy caveats around third-party sites and logged-in cookies but no hidden code or automatic access.

Use caution with the listed third-party parser sites because submitted video URLs and browser metadata may be visible to those services. Do not export or share Douyin cookies, credentials, or browser profiles with untrusted tools, and make sure any downloading complies with platform rules and rights-holder permissions.

A.I.G

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

SkillSpector

Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
Findings (1)

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
96% confidence
Finding

The skill directs users to submit Douyin URLs to third-party parsing sites and later suggests using a logged-in browser's cookies, but it provides no warning about privacy, session exposure, or account compromise risks. In this context, third-party services may collect accessed URLs, fingerprints, and potentially sensitive session data if users follow the browser-cookie workflow, making the omission security-relevant rather than a harmless documentation gap.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.