Brave Popup Builder < 0.8.6 - Unauthenticated Reflected XSS via UTM Parameters
Summary
| CVE | CVE-2026-77115 |
|---|---|
| State | PUBLISHED |
| Assigner | WPScan |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-23 06:17:27 UTC |
| Updated | 2026-08-23 16:16:39 UTC |
| Description | Brave Popup Builder (brave-popup-builder) up to version 0.8.5 reflects UTM query parameters into popup form HTML without escaping them. |
Risk And Classification
Primary CVSS: v3.1 7.1 HIGH from ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Problem Types: CWE-79 | CWE-79 Cross-Site Scripting (XSS) | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | ADP | DECLARED | 7.1 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L |
| 3.1 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | Secondary | 7.1 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
RequiredScope
ChangedConfidentiality
LowIntegrity
LowAvailability
LowCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| wpscan.com/vulnerability/d4a760c0-8e71-4261-a08b-9b6a296c631a | [email protected] | wpscan.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Huseyin Mertoglu (en)
CNA: WPScan (en)
There are currently no legacy QID mappings associated with this CVE.