🧪 Error Lab

Detailed breakdowns of common (and not-so-common) programming errors. Each entry includes root-cause analysis, a proven fix, and a code snippet you can use immediately.

Showing entries matching Rust. Clear filter.

2026-04-09

Security Flaw: SQL Injection via unsanitized user input

SQL Injection (SQLi) is a critical security vulnerability that occurs when an application constructs a database query dynamically by concate…

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2026-04-19

Rust: cannot borrow `x` as mutable more than once at a time

This is the classic Rust borrow checker error. To guarantee memory safety without a garbage collector, Rust enforces strict rules: at any gi…

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