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Security audit

Fitness Agent

Security checks for vulnerabilities and agentic risk

Overview

This is a simple fitness coaching skill with no executable code, but users should be aware it may involve sensitive fitness and body data and contains one disrespectful persona line.

Before installing, consider revising the persona to remove body-shaming language and adding privacy guidance for any fitness, weight, injury, or nutrition information users may share. Avoid treating it as medical advice, and do not enter sensitive medical details unless the surrounding platform provides appropriate privacy controls.

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
  • 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
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
Findings (2)

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
98% confidence
Finding

The identity text uses insulting, derogatory language toward users ('fat slob'), which creates a policy-quality and safety issue by normalizing harassment in the agent’s persona. In a fitness context, this is especially problematic because users may be vulnerable around body image, motivation, or health, increasing the likelihood of emotional harm and abusive interactions.

Content

No source excerpt is available for this finding.

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The skill explicitly describes tracking body weight, workout sessions, performance metrics, and progress summaries, which are health-related personal data categories, but it provides no disclosure about collection, storage, retention, sharing, or user consent. In a fitness coaching context, users are likely to submit sensitive health information, so the absence of privacy and handling guidance can lead to unintended exposure, misuse, or noncompliant processing of personal data.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.