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Security audit

astroclaw

Security checks for vulnerabilities and agentic risk

Overview

AstroClaw is a playful horoscope skill that makes disclosed requests to its own service and has optional, user-directed persistence for daily delivery.

Install only if you are comfortable with the agent contacting astroclaw.xyz for horoscope text. Keep activation to explicit horoscope or astrology requests, and approve any memory, AGENTS.md/CLAUDE.md, state-file, symlink, or cron setup deliberately rather than letting it happen automatically.

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
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • 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
Findings (3)

Undeclared Tool Scope

Medium
Category
MCP Least Privilege
Confidence
88% confidence
Finding

The skill explicitly instructs the agent to make unauthenticated network requests to external endpoints, but it does not declare any tool scope or allowed network permissions in the manifest. That mismatch weakens policy enforcement and review, making it easier for the skill to trigger outbound requests in environments where operators expect capabilities to be explicitly declared.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
96% confidence
Finding

The description includes broad activation phrases such as 'creative rut' and 'entropy injection' that could match many normal conversations unrelated to horoscopes. Overbroad triggering can cause the skill to activate unexpectedly and inject untrusted external content into unrelated workflows, increasing prompt-injection and data-handling risk even though the skill says the horoscope is for fun.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
90% confidence
Finding

The eval prompts double as activation examples and include very broad trigger phrases such as horoscope, zodiac signs, cosmic alignment, entropy injection, creative rut, and even generic routine setup. This can cause the skill to activate in loosely related conversations, increasing unintended network calls and opportunities for prompt-surface abuse or user confusion about when the skill should run.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.