cve/2024/CVE-2024-4769.md

### [CVE-2024-4769](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-4769)
![](https://img.shields.io/static/v1?label=Product&message=Firefox%20ESR&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Firefox&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Thunderbird&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=unspecified%3C%20115.11%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=unspecified%3C%20126%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Cross-origin%20responses%20could%20be%20distinguished%20between%20script%20and%20non-script%20content-types&color=brighgreen)

### Description

When importing resources using Web Workers, error messages would distinguish the difference between `application/javascript` responses and non-script responses.  This could have been abused to learn information cross-origin. This vulnerability affects Firefox < 126, Firefox ESR < 115.11, and Thunderbird < 115.11.

### POC

#### Reference
- https://bugzilla.mozilla.org/show_bug.cgi?id=1886108

#### Github
No PoCs found on GitHub currently.