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Security audit

discord-music-sync

Security checks for vulnerabilities and agentic risk

Overview

This skill does what it says: it helps create timed lyric audio files and a playback guide, with only ordinary file-writing risks to consider.

Install only if you are comfortable with the agent reading the lyrics file you provide and writing generated audio plus playback.txt to an output folder. Use a dedicated per-project output directory rather than a broad shared folder, and review Discord messages before sending if the lyrics are sensitive or copyrighted.

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
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (2)

Undeclared Tool Scope

Medium
Category
MCP Least Privilege
Confidence
91% confidence
Finding

The skill instructs the agent to read lyric files and write generated audio plus a playback manifest, but it does not declare any explicit tool scope or permissions boundaries. This increases the chance of unintended filesystem access or writes outside the intended workspace, especially because the example uses a concrete local path shared with another component.

Content

No source excerpt is available for this finding.

Missing User Warnings

Low
Category
Not specified by scanner
Confidence
84% confidence
Finding

The skill directs creation of MP3 files and a playback.txt manifest in a shared folder accessible by both the bot and agent, but it provides no warning or safeguards around shared-directory writes. In context this is not overtly malicious, but shared output locations can expose generated content to other processes, cause accidental overwrites, or leak sensitive local path information.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.