CVEs-PoC/2020/CVE-2020-12415.md

### [CVE-2020-12415](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12415)
![](https://img.shields.io/static/v1?label=Product&message=Firefox&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2078%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=AppCache%20manifest%20poisoning%20due%20to%20url%20encoded%20character%20processing&color=brighgreen)

### Description

When "%2F" was present in a manifest URL, Firefox's AppCache behavior may have become confused and allowed a manifest to be served from a subdirectory. This could cause the appcache to be used to service requests for the top level directory. This vulnerability affects Firefox < 78.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/Live-Hack-CVE/CVE-2020-12415