cve/2024/CVE-2024-56140.md

### [CVE-2024-56140](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-56140)
![](https://img.shields.io/static/v1?label=Product&message=astro&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%204.16.17%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-352%3A%20Cross-Site%20Request%20Forgery%20(CSRF)&color=brightgreen)

### Description

Astro is a web framework for content-driven websites. In affected versions a bug in Astro’s CSRF-protection middleware allows requests to bypass CSRF checks. When the `security.checkOrigin` configuration option is set to `true`, Astro middleware will perform a CSRF check. However, a vulnerability exists that can bypass this security. A semicolon-delimited parameter is allowed after the type in `Content-Type`. Web browsers will treat a `Content-Type` such as `application/x-www-form-urlencoded; abc` as a `simple request` and will not perform preflight validation. In this case, CSRF is not blocked as expected. Additionally, the `Content-Type` header is not required for a request. This issue has been addressed in version 4.16.17 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/Hstout21/CSRF_CTF