Individual skill

detecting-sql-injection-patterns

Scan a source tree for SQL-injection vulnerable patterns: string concatenation into queries, f-string interpolation in SQL, string-format substitution into raw queries, deprecated cursor methods (cursor.execute with % formatting), Knex / Sequelize raw() with template interpolation, sequelize.query with replacements. Use when: pre-commit code review, post-feature SQL-touching release, inheriting a legacy codebase that predates ORMs, or post-bug-report investigation. Threshold: any source line where SQL keywords (SELECT / INSERT / UPDATE / DELETE / FROM / WHERE) appear in a string that's being built via concatenation, f-string, %-format, or .format() with variable input. Trigger with: "scan for sqli", "sql injection patterns", "check raw queries", "audit cursor.execute".

plugins/security/penetration-tester/skills/detecting-sql-injection-patterns/SKILL.md

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Last checked
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Nov 12, 2026
License
MIT

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# Detecting SQL Injection Patterns

## Overview

SQL injection (CWE-89, OWASP A03:2021) remains one of the highest-
impact and most-easily-introduced vulnerability classes. The fix is
near-universal: use parameterized queries. The cause when introduced:
an engineer concatenates user input into a SQL string because the
ORM's parameterization mechanism wasn't obvious, or because they
"just need to add a quick condition."

The scanner reads source files and grades each apparent SQL-string
construction against the threshold table.
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