CVEs-PoC/2020/CVE-2020-6798.md

### [CVE-2020-6798](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6798)
![](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=%3C%2068.5%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2073%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Incorrect%20parsing%20of%20template%20tag%20could%20result%20in%20JavaScript%20injection&color=brighgreen)

### Description

If a template tag was used in a select tag, the parser could be confused and allow JavaScript parsing and execution when it should not be allowed. A site that relied on the browser behaving correctly could suffer a cross-site scripting vulnerability as a result. In general, this flaw cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but is potentially a risk in browser or browser-like contexts. This vulnerability affects Thunderbird < 68.5, Firefox < 73, and Firefox < ESR68.5.

### POC

#### Reference
- https://usn.ubuntu.com/4328-1/

#### Github
- https://github.com/ARPSyndicate/cvemon