youtube-downloader
Download YouTube videos with customizable quality and format options. Use this skill when the user asks to download, save, or grab YouTube videos. Supports various quality settings (best, 1080p, 720p, 480p, 360p), multiple formats (mp4, webm, mkv), and audio-only downloads as MP3.
88
88%
Does it follow best practices?
Impact
Pending
No eval scenarios have been run
Advisory
Suggest reviewing before use
Security
2 findings — 2 medium severity. This skill can be installed but you should review these findings before use.
W011: Third-party content exposure detected (indirect prompt injection risk)
What this means
The skill exposes the agent to untrusted, user-generated content from public third-party sources, creating a risk of indirect prompt injection. This includes browsing arbitrary URLs, reading social media posts or forum comments, and analyzing content from unknown websites.
Why it was flagged
Third-party content exposure detected (high risk: 0.70). The skill's script (scripts/download_video.py) calls yt-dlp --dump-json on arbitrary YouTube URLs to fetch and parse public, user-generated video metadata (title/uploader/duration) and then uses/displays that content as part of the download workflow, exposing the agent to untrusted third-party content from YouTube.
W012: Unverifiable external dependency detected (runtime URL that controls agent)
What this means
The skill fetches instructions or code from an external URL at runtime, and the fetched content directly controls the agent’s prompts or executes code. This dynamic dependency allows the external source to modify the agent’s behavior without any changes to the skill itself.
Why it was flagged
Potentially malicious external URL detected (high risk: 0.80). The script automatically runs pip to install the "yt-dlp" package at runtime (which fetches and executes code from PyPI, e.g. https://pypi.org/project/yt-dlp/), and yt-dlp is a required dependency for operation, so this runtime fetch can execute remote code.
- Repository
- ComposioHQ/awesome-claude-skills
- Commit
362d354
- Audited
- Security analysis
Is this your skill?
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