CVE-2020-15655
Medium
Description
A redirected HTTP request which is observed or modified through a web extension could bypass existing CORS checks, leading to potential disclosure of cross-origin information. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.
SeverityMedium
CVSS6.5
Exploit probability—
Product
Mozilla Firefox
PublishedAug 10, 2020
First seenAug 10, 2020
How to fix
Update
- mozilla firefox79.0 or later
- mozilla firefox_esr78.1 or later
- mozilla thunderbird78.1 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 79.0 | 79.0 |
| mozilla firefox_esr | v < 78.1 | 78.1 |
| mozilla thunderbird | v < 78.1 | 78.1 |
| opensuse leap | 15.2 | — |
| canonical ubuntu_linux | 16.04, 18.04, 20.04 | — |
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