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Security audit

Beaconchain

Security checks for vulnerabilities and agentic risk

Overview

This is a straightforward Beaconcha.in dashboard checker that uses the expected credentials and disclosed API endpoint without persistence or unrelated access.

Use this only if you intend to provide a Beaconcha.in API key and dashboard ID for validator monitoring. Prefer a scoped or revocable API key and run it manually or under a schedule you control; the inspected script does not install its own scheduler or write files.

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
  • 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 (1)

Lp3

Medium
Category
MCP Least Privilege
Confidence
91% confidence
Finding
The skill requires access to environment variables and makes outbound network requests, but it does not declare an explicit tool scope such as permissions or allowed-tools. That gap weakens least-privilege enforcement and reviewability, because a runner may grant broader capabilities than intended or users may not be clearly informed that secrets and network egress are required.

Static analysis

No suspicious patterns detected.