Business Logic Errors · passage 2 of 11

Methodology

Text · Business Logic Errors/README.md

For testing systems you own or are authorised to test, and for defending them. Nothing here is run by this page.

Unlike other types of security vulnerabilities like SQL injection or cross-site scripting (XSS), business logic errors do not rely on problems in the code itself (like unfiltered user input). Instead, they take advantage of the normal, intended functionality of the application, but use it in ways that the developer did not anticipate and that have undesired consequences. Common examples of Business Logic Errors.

Every one of the 11 is a mark on the map. Named now: 1 to 11, reading order first.

Zoom in on the map and the dots under the middle of it are named where they are.

Data as of 2026-11-15. CVE List through 2026-11-15 · EPSS of 2026-11-15 · CISA KEV checked 2026-11-15. Source: PayloadsAllTheThings by Swissky and contributors, MIT License. For authorised testing only.