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Security audit

Axum Code Review

Security checks for vulnerabilities and agentic risk

Overview

This is a markdown-only Axum code review helper with no evidence of hidden execution, persistence, or data exfiltration.

This skill appears safe to install for Axum code review. Be aware that it will prompt the agent to read project code and may rely on a separate review-verification-protocol skill if available.

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
  • Rogue AgentSelf-Modification, Session Persistence
  • 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 (2)

Session Persistence

Medium
Category
Rogue Agent
Confidence
75% confidence
Finding

Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.

Content

Scanner excerpt · SKILL.md (reported line 117)May include surrounding context.

md
- **Returning `impl IntoResponse` from handlers** — More flexible than concrete types
- **`Router::new()` per module, merged in main** — Standard organization pattern
- **`ServiceBuilder` for layer composition** — Tower pattern, not over-engineering
- **`axum::serve` with `TcpListener`** — Standard axum 0.7+ server setup
- **Native `async fn` in `FromRequest`/`FromRequestParts` impls** — `async-trait` crate no longer needed (stable since Rust 1.75)
- **`+ use<'a>` on handler return types** — Edition 2024 precise capture syntax for RPIT
- **`std::sync::LazyLock` for shared static state** — Replaces `once_cell`/`lazy_static` (stable since Rust 1.80)

Session Persistence

Medium
Category
Rogue Agent
Confidence
75% confidence
Finding

Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.

Content

Scanner excerpt · references/middleware.md (reported line 139)May include surrounding context.

md
- **Returning `impl IntoResponse` from handlers** — More flexible than concrete types
- **`Router::new()` per module, merged in main** — Standard organization pattern
- **`ServiceBuilder` for layer composition** — Tower pattern, not over-engineering
- **`axum::serve` with `TcpListener`** — Standard axum 0.7+ server setup
- **Native `async fn` in `FromRequest`/`FromRequestParts` impls** — `async-trait` crate no longer needed (stable since Rust 1.75)
- **`+ use<'a>` on handler return types** — Edition 2024 precise capture syntax for RPIT
- **`std::sync::LazyLock` for shared static state** — Replaces `once_cell`/`lazy_static` (stable since Rust 1.80)