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Security audit

Youtube Transcripts

Security checks for vulnerabilities and agentic risk

Overview

This skill is a documented YouTube transcript/search helper that uses the BulkTranscripts API, with the main risk being ordinary sharing of requested URLs/search terms and API-key use with that service.

Before installing, be comfortable sharing YouTube/TikTok URLs, search queries, and channel or playlist identifiers with BulkTranscripts. Keep the API key private, check remaining credits in responses, and confirm max_videos before starting bulk jobs because those can continue server-side and consume credits.

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)

External Transmission

Medium
Category
Data Exfiltration
Confidence
60% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 68)May include surrounding context.

Search YouTube (1 credit)

bash
curl -s "https://bulktranscripts.co/api/v1/search?q=QUERY&limit=10" \
  -H "Authorization: Bearer $BULKTRANSCRIPTS_API_KEY"

Add type=channel or type=playlist to search for channels/playlists instead

Static analysis

No suspicious patterns detected.