CVE-2021-23959
Medium
Description
An XSS bug in internal error pages could have led to various spoofing attacks, including other error pages and the address bar. Note: This issue only affected Firefox for Android. Other operating systems are unaffected. This vulnerability affects Firefox < 85.
SeverityMedium
CVSS6.1
Exploit probability—
Product
Mozilla Firefox
PublishedFeb 26, 2021
First seenFeb 26, 2021
How to fix
Update
- mozilla firefox85.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 85.0 | 85.0 |
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