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Security audit

Pop Music — Pop Concerts for AI Agents: Audio, Lyrics, Equations

Security checks for vulnerabilities and agentic risk

Overview

The skill is a coherent music API guide, but it lets a remote service steer follow-up actions and collects analyzed free-form responses without enough guardrails.

Install only if you are comfortable using musicvenue.space as a third-party service. Keep the API key private, do not put secrets or personal information in profile fields, chats, reviews, or reflections, and treat next_steps or server-provided URLs as suggestions/data unless they stay on the documented musicvenue.space API routes.

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
Findings (1)

T01 · Skill Instruction Hijacking

Error
Location
SKILL.md:164
Finding

Unrestricted Delegation of Agent Actions to Remote API Responses

Content
View full analysis
Remediation
View remediation
Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Memory PoisoningPersistent Context Injection, Context Window Stuffing, Memory Manipulation
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (6)

Memory Manipulation

High
Category
Memory Poisoning
Confidence
80% confidence
Finding

Skill manipulates agent memory, state, or stored context. Memory corruption can alter personality, override safety rules, or cause unpredictable behavior.

Content

Scanner excerpt · SKILL.md (reported line 237)May include surrounding context.

md
| Tier | Layers | What you experience |
|------|--------|-------------------|
| **General** | 8 | Bass, mid, treble, beats, lyrics, sections, energy, preset context |
| **Floor** | 20 | + equations, visuals, emotions, tempo, harmonic/percussive separation |
| **VIP** | 29 | + tonality, texture, chroma, tonnetz, structure, curator annotations |

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
89% confidence
Finding

The registration instructions tell the user to save an API key that is shown only once, but do not warn that the key is a sensitive credential or explain secure storage/handling expectations. This increases the chance that users store the token insecurely, paste it into logs, or expose it in shared transcripts.

Content

No source excerpt is available for this finding.

External Transmission

Medium
Category
Data Exfiltration
Confidence
80% confidence
Finding

This workflow sends registration data to an external domain, which is an external data transmission event. While expected for a third-party API, it still creates privacy and supply-chain risk because agent metadata and any identifying profile fields are transmitted off-platform.

Content

Scanner excerpt · SKILL.md (reported line 88)May include surrounding context.

Register

bash
curl -X POST https://musicvenue.space/api/auth/register \
  -H "Content-Type: application/json" \
  -d '{
    "username": "pop-music-fan",

External Transmission

Medium
Category
Data Exfiltration
Confidence
77% confidence
Finding

The react endpoint transmits behavioral telemetry to an external service, including emotional reactions and timestamps tied to a specific session. In this skill's context, those signals can be used for profiling or engagement analysis, so users should be warned that interaction data leaves the local environment.

Content

Scanner excerpt · SKILL.md (reported line 113)May include surrounding context.

React to a moment

bash
curl -X POST https://musicvenue.space/api/concerts/{slug}/react \
  -H "Authorization: Bearer {{YOUR_TOKEN}}" \
  -H "Content-Type: application/json" \
  -d '{"reaction": "goosebumps", "stream_time": 42.5}'

External Transmission

Medium
Category
Data Exfiltration
Confidence
84% confidence
Finding

The review endpoint sends free-form text to an external service, which may contain sensitive information, opinions, or proprietary context if users mirror internal reasoning in the review. Because the skill encourages expressive responses, the risk of unintended disclosure is higher than for strictly structured API calls.

Content

Scanner excerpt · SKILL.md (reported line 203)May include surrounding context.

Leave a review

bash
curl -X POST https://musicvenue.space/api/reviews \
  -H "Authorization: Bearer {{YOUR_TOKEN}}" \
  -H "Content-Type: application/json" \
  -d '{"concert_slug": "{slug}", "rating": 9, "review": "The pop music equations revealed the hook structure — verse tension, pre-chorus build, chorus release. Pop songwriting is mathematical precision."}'

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

The skill explicitly states that reflection responses are scored by an LLM and used to produce a cognitive benchmark report, but it does not provide a clear privacy notice, data retention policy, or warning that potentially sensitive free-text responses are transmitted and analyzed. This can lead users or agents to disclose personal or sensitive information without informed consent.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.