# A03 Injection

> Skills for identifying and exploiting injection vulnerabilities including SQL, NoSQL, command, template, and other injection attacks per OWASP A03:2021. Use when this capability is needed.

- Skill: `tomevault-io/a03-injection` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add tomevault-io/a03-injection`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/a03-injection/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Data & Analytics
- Author: tomevault-io (https://skillmd.com/u/tomevault-io)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/tomevault-io/a03-injection

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# Injection (OWASP A03)

Injection flaws occur when untrusted data is sent to an interpreter as part of a command or query.

## Skills

- [SQL Injection](references/sql-injection.md) - Database query manipulation
- [NoSQL Injection](references/nosql-injection.md) - MongoDB and NoSQL attacks
- [Command Injection](references/command-injection.md) - OS command execution
- [SSTI](references/ssti.md) - Server-Side Template Injection
- [LDAP Injection](references/ldap-injection.md) - Directory service attacks
- [XPath Injection](references/xpath-injection.md) - XML query manipulation
- [ORM Injection](references/orm-injection.md) - ORM framework exploitation
- [CRLF Injection](references/crlf-injection.md) - HTTP header injection

## Quick Reference

| Attack | Detection | Tools |
|--------|-----------|-------|
| SQLi | `'`, `"`, `OR 1=1` | sqlmap |
| Command | `;`, `\|`, `&&` | commix |
| SSTI | `{{7*7}}`, `${7*7}` | tplmap |
| NoSQL | `$ne`, `$gt`, `$regex` | manual |

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