CVE-2026-77115
High
Description
Brave Popup Builder (brave-popup-builder) up to version 0.8.5 reflects UTM query parameters into popup form HTML without escaping them.
SeverityHigh
CVSS7.1
Exploit probability—
ProductBrave
PublishedAug 23, 2026
First seenAug 23, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- Brave0.8.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Brave | v < 0.8.6 | 0.8.6 |
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