Security Audit Skill

Security audit patterns (OWASP Top 10, LLM Top 10 2025, CWE Top 25 2025, CVSS v4.0), cloud/IaC, GitHub security. 80+ PHP/TYPO3 checkpoints (v14.3 LTS in typo3-security.md).

Expertise Areas

• Vulnerabilities: XXE, SQLi, XSS, CSRF, command injection, path traversal, file upload, deserialization, SSRF, SSTI, JWT, type juggling
• Standards: OWASP Top 10 / API / LLM (2025), CWE Top 25, CVSS v3.1/v4.0, OWASP ASVS
• Cloud & IaC: AWS; Terraform, Kubernetes, Docker, Helm
• API & Frontend: REST/GraphQL authZ, rate limits, mass assignment, CSP, DOM-XSS
• AI Agents: SKILL.md/AGENTS.md/CLAUDE.md/mcp.json/hooks.json audit; prompt injection; excessive agency

Reference Files (in references/, .md implied)

• Core: owasp-top10, cwe-top25, xxe-prevention, cvss-scoring, api-key-encryption
• Prevention: deserialization-prevention, path-traversal-prevention, file-upload-security, input-validation, error-message-sanitization
• Architecture: authentication-patterns, security-headers, security-logging, cryptography-guide, security-invariants
• Language features (*-security-features): php, python, javascript-typescript, nodejs, go
• Frameworks (*-security): typo3, typo3-fluid, typo3-typoscript, symfony, react, vue
• Cloud & IaC: aws-security, iac-security
• API & Frontend: api-security, frontend-security
• AI Agent: llm-security (OWASP LLM Top 10 2025)
• Threats: modern-attacks, cve-patterns
• DevSecOps: ci-security-pipeline, supply-chain-security, automated-scanning, gha-security, git-history-secrets
• Incident: supply-chain-incident-response

Security Checklist

• semgrep/opengrep, trivy fs --severity HIGH,CRITICAL, gitleaks clean
• bcrypt/Argon2 passwords, CSRF on state changes, TLS 1.2+
• Server-side input validation; parameterized SQL; XML entities off
• Output encoding + CSP; no unserialize() on user input
• API keys encrypted; exception messages sanitized
• Secrets out of VCS; audit logging on
• Uploads validated, renamed, outside web root
• Headers HSTS + X-Content-Type-Options; dependencies scanned

GitHub Actions Security

• NEVER interpolate ${{ inputs. }} / ${{ github.event. }} in run: — use env:
• Dependency triage: upgrade > override > dismiss. Full patterns: references/gha-security.md.

Verification

./scripts/security-audit-dispatcher.sh /path/to/project  # auto-detect stack
./scripts/security-audit.sh /path/to/project             # PHP-only
./scripts/github-security-audit.sh owner/repo            # GH repo

Dispatcher detects the stack from indicator files and runs matching scripts/scanners/*.sh (13 ecosystems; see references/ index).

Contributing: https://github.com/netresearch/security-audit-skill

Credits & Attribution

This skill is based on the excellent work by Netresearch DTT GmbH.

Original repository: https://github.com/netresearch/security-audit-skill

Copyright (c) Netresearch DTT GmbH — Methodology and best practices (MIT / CC-BY-SA-4.0)

Special thanks to Netresearch DTT GmbH for their generous open-source contributions to the TYPO3 community, which helped shape this skill collection. Adapted by webconsulting.at for this skill collection