> ## Documentation Index
> Fetch the complete documentation index at: https://rootea.es/llms.txt
> Use this file to discover all available pages before exploring further.

# URL normalization

> PortSwigger Web Security Academy lab: URL normalization. Topic: Web Cache Poisoning.

# URL normalization

<p className="machine-summary"><span className="prompt"><code>\$ tldr</code></span> PortSwigger · Web Cache Poisoning</p>

<div className="machine-meta">
  | ·            | ·                                                                                                                                      |
  | ------------ | -------------------------------------------------------------------------------------------------------------------------------------- |
  | Platform     | PortSwigger Web Security Academy                                                                                                       |
  | Topic        | Web Cache Poisoning                                                                                                                    |
  | Difficulty   | <span className="dbadge dbadge-medium">PRACTITIONER</span>                                                                             |
  | Official lab | [Open](https://portswigger.net/web-security/web-cache-poisoning/exploiting-implementation-flaws/lab-web-cache-poisoning-normalization) |
</div>

## Solve the lab

| Language | Author          | Format | Link                                                                                                                                   |
| -------- | --------------- | ------ | -------------------------------------------------------------------------------------------------------------------------------------- |
| 🇬🇧 EN  | **PortSwigger** | Texto  | [Open](https://portswigger.net/web-security/web-cache-poisoning/exploiting-implementation-flaws/lab-web-cache-poisoning-normalization) |

## Resources by skill

| Skill                                     | Source      | Link                                                             |
| ----------------------------------------- | ----------- | ---------------------------------------------------------------- |
| Web Cache Attacks (Poisoning / Deception) | PortSwigger | [Open](https://portswigger.net/web-security/web-cache-deception) |

## Related skills

[Web Cache Attacks (Poisoning / Deception)](/en/skills/web-cache-attacks)

***

## Comments & tips

Solved this lab a different way? Share it here — comments live in [GitHub Discussions](https://github.com/FFuson/HTB_Writeups/discussions).

<div className="rootea-giscus-wrap" data-giscus-term="lab:web-cache-poisoning-exploiting-implementation-flaws-web-cache-poisoning-normalization" data-giscus-lang="en" />

*Last updated: 2026-05-08*

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