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Business Logic Errors · passage 7 of 11

Premium Feature Exploitation

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.

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* Explore the possibility of accessing premium account-only sections or endpoints without a valid subscription. * Purchase a premium feature, cancel it, and see if you can still use it after a refund. * Look for true/false values in requests/responses that validate premium access. Use tools like Burp's Match & Replace to alter these values for unauthorized premium access. * Review cookies or local storage for variables validating premium access.

Source: Business Logic Errors/README.md in PayloadsAllTheThings. From PayloadsAllTheThings by Swissky and contributors. MIT License, Copyright (c) 2019 Swissky.

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

  1. Business Logic Errors§ 1text · README.md
  2. Methodology§ 2text · README.md
  3. Review Feature Testing§ 3text · README.md
  4. Discount Code Feature Testing§ 4text · README.md
  5. Delivery Fee Manipulation§ 5text · README.md
  6. Currency Arbitrage§ 6text · README.md
  7. Premium Feature Exploitation§ 7text · README.md
  8. Refund Feature Exploitation§ 8text · README.md
  9. Cart/Wishlist Exploitation§ 9text · README.md
  10. Thread Comment Testing§ 10text · README.md
  11. Rounding Error§ 11text · README.md

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.

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