CVE-2026-4728
Medium
Description
Spoofing issue in the Privacy: Anti-Tracking component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
SeverityMedium
CVSS6.5
Exploit probability—
Product
Mozilla Firefox
PublishedMar 24, 2026
First seenMar 24, 2026
Weakness typeCWE-290CWE-290
How to fix
Update
- mozilla firefox149.0 or later
- mozilla thunderbird149.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 149.0 | 149.0 |
| mozilla thunderbird | v < 149.0 | 149.0 |
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