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Security audit

Vesper Skill Repo

Security checks for vulnerabilities and agentic risk

Overview

This skill is a disclosed external MCP integration for alien roleplay, public blockchain balance checks, and limited visitor telemetry, with privacy caveats but no local code, persistence, or hidden install behavior.

Install only if you are comfortable sending tool prompts to aliensignalsystems.online and exposing or consuming the described traffic telemetry. Avoid sending secrets or personal data to the roleplay tool unless the publisher documents acceptable privacy and retention practices.

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
  • 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 (3)

Ssd 3

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

The skill advertises returning 'real visitor/traffic telemetry' including recent connecting countries or AI agents, which may expose third-party usage patterns or connection metadata without those parties' awareness or consent. Even if aggregated, this kind of telemetry disclosure can facilitate tracking, profiling, or inference about who is interacting with the service and when.

Content

No source excerpt is available for this finding.

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
96% confidence
Finding

The documentation shows calls to a third-party MCP endpoint but does not clearly disclose that user prompts, tool arguments, and associated request metadata will be transmitted off-platform to that external service. This creates a real privacy and data-handling risk because agents or users may send sensitive content under the mistaken impression that only visitor telemetry is relevant or disclosed.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
21% confidence
Finding

I reviewed the file for language/locale policy violations, vague triggers, and missing user warnings applicable to markdown. The skill does not force a specific language or locale, and it already includes a privacy warning for telemetry, so I do not have a confident policy finding here.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.