CVE-2020-12391
High
Description
Documents formed using data: URLs in an OBJECT element failed to inherit the CSP of the creating context. This allowed the execution of scripts that should have been blocked, albeit with a unique opaque origin. This vulnerability affects Firefox < 76.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Mozilla Firefox
PublishedMay 26, 2020
First seenMay 26, 2020
How to fix
Update
- mozilla firefox76.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 76.0 | 76.0 |
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