CVE-2025-8031
Critical
Description
The `username:password` part was not correctly stripped from URLs in CSP reports potentially leaking HTTP Basic Authentication credentials. This vulnerability was fixed in Firefox 141, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Mozilla Firefox
PublishedJul 22, 2025
First seenJul 22, 2025
Weakness typeCWE-276CWE-276
How to fix
Update
- mozilla firefox128.13.0, 141.0, 140.1.0 or later
- mozilla thunderbird128.13.0, 141.0, 140.1.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 128.13.0, v < 141.0, 140.0 ≤ v < 140.1.0 | 128.13.0, 141.0, 140.1.0 |
| mozilla thunderbird | v < 128.13.0, v < 141.0, 140.0 ≤ v < 140.1.0 | 128.13.0, 141.0, 140.1.0 |
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