CVE-2026-6770
Medium
Description
Other issue in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
SeverityMedium
CVSS6.5
Exploit probability90. percentile3.9%
Product
Mozilla Firefox
PublishedApr 21, 2026
First seenApr 21, 2026
Weakness typeCWE-200Sensitive information exposure
How to fix
Update
- mozilla firefox140.10.0, 150.0 or later
- mozilla thunderbird140.10.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 140.10.0, v < 150.0 | 140.10.0, 150.0 |
| mozilla thunderbird | v < 140.10.0 | 140.10.0 |
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