### [CVE-2018-18494](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18494)
![](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=%3C%2060.4%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2064%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Same-origin%20policy%20violation%20using%20location%20attribute%20and%20performance.getEntries%20to%20steal%20cross-origin%20URLs&color=brighgreen)

### Description

A same-origin policy violation allowing the theft of cross-origin URL entries when using the Javascript location property to cause a redirection to another site using performance.getEntries(). This is a same-origin policy violation and could allow for data theft. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64.

### POC

#### Reference
- https://bugzilla.mozilla.org/show_bug.cgi?id=1487964
- https://bugzilla.mozilla.org/show_bug.cgi?id=1487964

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