CVE-2022-40956
Medium
Description
When injecting an HTML base element, some requests would ignore the CSP's base-uri settings and accept the injected element's base instead. This vulnerability affects Firefox ESR < 102.3, Thunderbird < 102.3, and Firefox < 105.
SeverityMedium
CVSS6.1
Exploit probability—
Product
Mozilla Firefox
PublishedDec 22, 2022
First seenDec 22, 2022
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- mozilla firefox105.0 or later
- mozilla firefox_esr102.3 or later
- mozilla thunderbird102.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 105.0 | 105.0 |
| mozilla firefox_esr | v < 102.3 | 102.3 |
| mozilla thunderbird | v < 102.3 | 102.3 |
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