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Security audit

YouTube Video Transcript

Security checks for vulnerabilities and agentic risk

Overview

This skill is a straightforward YouTube transcript helper that uses a disclosed third-party API key, with no bundled code, persistence, or hidden behavior found.

Install only if you are comfortable using BulkTranscripts for video transcript retrieval. Treat the BulkTranscripts API key as a secret: prefer setting BULKTRANSCRIPTS_API_KEY in a trusted environment, avoid pasting it into logs or shared chats, and rotate it if exposed.

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
Confidence
93% confidence
Finding
The skill explicitly instructs users to obtain and use a third-party API key and to send it as a Bearer token, but it does not warn about the trust boundary, storage/handling risks, or that the credential grants access to the user's third-party account and credits. In an agent-skill context, this omission can lead users to paste secrets into environments they do not fully control, increasing the risk of credential leakage, misuse, or unintended billing against their account.

Static analysis

No suspicious patterns detected.