Security Misconfiguration

Security Misconfiguration is a skill for Claude Code from allsmog/vuln-scout. It costs 53 tokens per session (3,113 once invoked), scanned A, original, MIT.

A checklist and pattern guide for security misconfiguration, meaning unsafe application or server settings. It covers issues such as debug mode, default credentials, exposed endpoints, missing security headers, and weak TLS settings.

In plain words
What is it for?
Auditing configuration files, detecting exposed debug or admin features, checking security headers and TLS, and looking for default or weak credentials.
Why use it?
Configuration mistakes can expose private information or administrative functions even when the application code appears correct. The guide gives reviewers concrete patterns to check.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the vuln-scout plugin — 32 skills, 15 commands, 9 agents shipped together

Good fit Auditing configuration files, detecting exposed debug or admin features, checking security headers and TLS, and looking for default or weak credentials.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/allsmog/vuln-scout/security-misconfiguration
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add allsmog/vuln-scout --skill security-misconfiguration
Clone the repo
git clone --depth 1 https://github.com/allsmog/vuln-scout

Made for: Claude Code.

Or install vuln-scout, the plugin that ships this one along with the rest of its 32 skills, 15 commands, 9 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for Security Misconfiguration

README.md
[![agentmods](https://agentmods.dev/badge/skills/allsmog/vuln-scout/security-misconfiguration/github.svg)](https://agentmods.dev/skills/allsmog/vuln-scout/security-misconfiguration)
Your own site
<a href="https://agentmods.dev/skills/allsmog/vuln-scout/security-misconfiguration"><img src="https://agentmods.dev/badge/skills/allsmog/vuln-scout/security-misconfiguration/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for Security Misconfiguration

Your own site · 80×15
<a href="https://agentmods.dev/skills/allsmog/vuln-scout/security-misconfiguration"><img src="https://agentmods.dev/badge/skills/allsmog/vuln-scout/security-misconfiguration.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 53 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,113 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00053 $0.03113
Opus 5 $0.00026 $0.01556
Sonnet 5 $0.00011 $0.00623
Haiku 4.5 $0.00005 $0.00311

Measured 10d ago against content hash bd59b7e20c9d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

Security Misconfiguration scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

vuln-scout/skills/security-misconfiguration/SKILL.md · 359 lines

How it starts

The opening of the file, as written. The whole thing — 359 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Security Misconfiguration (OWASP A05)

Purpose

Provide detection patterns for security misconfiguration vulnerabilities including default credentials, debug mode exposure, missing security headers, and insecure TLS settings.

OWASP Top 10 Mapping

Category: A05 - Security Misconfiguration

CWEs:

  • CWE-16: Configuration
  • CWE-209: Information Exposure Through Error Messages
  • CWE-215: Information Exposure Through Debug Information
  • CWE-548: Information Exposure Through Directory Listing
  • CWE-756: Missing Custom Error Page

When to Use

Activate this skill when:

  • Reviewing application configuration files
  • Checking for exposed debug/admin endpoints
  • Auditing security header implementation
  • Verifying TLS/SSL configuration
  • Looking for default or weak credentials

Debug Mode Enabled

Detection Patterns

Python (Django/Flask)
# Django debug mode
grep -rniE "DEBUG\s*=\s*True" --include="*.py" --include="settings.py"

# Flask debug mode
grep -rniE "app\.debug\s*=\s*True|FLASK_DEBUG|debug=True" --include="*.py"

# Environment files
grep -rniE "DEBUG=1|DEBUG=true|DEBUG=True" --include="*.env" --include=".env*"
Java (Spring)
# Spring DevTools / Debug
grep -rniE "spring\.devtools|management\.endpoints\.web\.exposure|actuator" --include="*.properties" --include="*.yaml" --include="*.yml"

# Exposed actuator endpoints
grep -rniE "exposure\.include.*\*|exposure\.include.*health,info,env" --include="*.properties" --include="*.yaml"
PHP
# Display errors
grep -rniE "display_errors.*On|display_errors.*1|error_reporting.*E_ALL" --include="*.php" --include="php.ini"

# Laravel debug
grep -rniE "APP_DEBUG=true|'debug'.*=>.*true" --include="*.env" --include="*.php"
Go
# Gin debug mode
grep -rniE "gin\.SetMode.*gin\.DebugMode|GIN_MODE=debug" --include="*.go" --include="*.env"

# pprof enabled
grep -rniE "net/http/pprof|/debug/pprof" --include="*.go"
TypeScript/Node.js
# Debug environment
grep -rniE "NODE_ENV.*development|DEBUG=\*|debug.*true" --include="*.ts" --include="*.js" --include="*.env"

Read the full file on GitHub · 359 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 10d ago First seen · 359 lines · 53 tokens per session scan A bd59b7e20c9d

Subscribe to this mod's changes

Security Misconfiguration is a skill published in the GitHub repository allsmog/vuln-scout (24 stars, last pushed 2mo ago), licensed MIT. It adds 53 tokens to every session and 3,113 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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