Security audit

fitatu-diary

Security checks for vulnerabilities and agentic risk

Overview

The diary features fit their purpose, but the documented remote setup can expose your access token and private health records over an unencrypted connection.

Prefer the local connection. For remote use, require HTTPS or an encrypted tunnel and restrict network access. Choose read-only mode for reports, keep confirmation controls enabled for changes, protect the saved session, and establish Fitatu context before allowing diary access.

A.I.G

Vulnerability Patterns

Insecure Skill Coding PracticesFinds exploitable flaws such as hardcoded secrets or command injection
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

Findings (1)

T09 · Insecure Skill Coding Practices

Warning

Location: SKILL.md
Finding: Remote setup transmits the MCP bearer token and health data over plaintext HTTP
Content: View full analysis
Impact

An on-path attacker can read health data and capture the bearer token for impersonating the MCP client. The documented setup does not enable read-only mode by default, so replayed credentials may also permit diary changes through the exposed write tools.

SkillSpector

Vulnerability Patterns

Output HandlingUnvalidated Output Injection, Cross-Context Output, Unbounded Output
Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
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 (2)

The activation description includes general food, weight, and water mentions without requiring a Fitatu-related request.

Medium

Category: Trigger Abuse
Confidence: 98% confidence
Finding: Triggers such as mentioning 'what they ate' or 'their weight, water or calorie goal' overlap with ordinary nutrition conversations. The description does not require Fitatu context or exclude general dietary questions, so the skill could activate when diary access is not intended.
Content: No source excerpt is available for this finding.

Remote-server setup instructs use of plaintext HTTP without warning about exposure of authentication tokens and health data.