# The Desync Delusion: Are You Really Protected Against HTTP Request Smuggling?

DevFeed: [The Desync Delusion: Are You Really Protected Against HTTP Request Smuggling?](<https://devfeed.tech/articles/the-desync-delusion-are-you-really-protected-against-http-request-smuggling-7740.md>)

Original publisher: [Read original article](<https://portswigger.net/blog/the-desync-delusion-are-you-really-protected-against-http-request-smuggling>)

Author: Andrzej Matykiewicz

Published: 2025-08-06T22:22:44Z

Content type: article

Language: en

Sources: [PortSwigger Blog](<https://devfeed.tech/sources/portswigger-blog.md>)

Topics: [Vulnerabilities](<https://devfeed.tech/topics/vulnerabilities.md>), [Application Security](<https://devfeed.tech/topics/application-security.md>), [web applications](<https://devfeed.tech/topics/web-applications.md>)

Tags: [application-security](<https://devfeed.tech/tags/application-security.md>), [attacks](<https://devfeed.tech/tags/attacks.md>), [http](<https://devfeed.tech/tags/http.md>), [security](<https://devfeed.tech/tags/security.md>), [servers](<https://devfeed.tech/tags/servers.md>), [testing](<https://devfeed.tech/tags/testing.md>), [tools](<https://devfeed.tech/tags/tools.md>), [vulnerabilities](<https://devfeed.tech/tags/vulnerabilities.md>)

## AI overview

The article argues that conventional DAST scanners often miss HTTP request-smuggling vulnerabilities because they rely on fixed payloads and known scenarios. It presents Burp Suite DAST's infrastructure-specific analysis of front-end and back-end parsing discrepancies as a more comprehensive detection approach.

## Source excerpt

The Hidden Threat That's Slipping Past Your Security HTTP request smuggling remains one of the most dangerous yet frequently overlooked web vulnerabilities today. Despite being a widely known issue si