Reverse Proxy Misconfigurations · passage 3 of 9
Text · Reverse Proxy Misconfigurations/README.md
For testing systems you own or are authorised to test, and for defending them. Nothing here is run by this page.
Open this passage on GitHubSince headers like `X-Forwarded-For`, `X-Real-IP`, and `True-Client-IP` are just regular HTTP headers, a client can set or override them if it can control part of the traffic path—especially when directly connecting to the application server, or when reverse proxies are not properly filtering or validating these headers.
Source: Reverse Proxy Misconfigurations/README.md in PayloadsAllTheThings. From PayloadsAllTheThings by Swissky and contributors. MIT License, Copyright (c) 2019 Swissky.
Every one of the 9 is a mark on the map. Named now: 1 to 9, 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 2026-11-14 · CISA KEV checked 2026-11-15. Source: PayloadsAllTheThings by Swissky and contributors, MIT License. For authorised testing only.